FIELD NOTES FOR THE PEA RIDGE MINE	
			
			
FIELD_ID	MINE_LEVEL_DRIFT	ROCK_TYPE	ROCK_DESC
PR001	2275; X11 	2275 Porphyry 	Rhyolite with quartz+red feldspar phenocrysts; hematite spots with alteration halos; protolith was rhyolitic lava flow
PR010	2275; main haulage 	2275 Porphyry 	"30' west of contact of with 1825 rhyolite porphyry, relatively fresh"
PR100	1825; x-cut 1315 approx. 90' from V12	Brecciated magnetite ore	"Fractured/brecciated magnetite ore zone, magnetite replaced by hematite along veinlets; seams and pods of calcite and minor quartz in ore (approx. 5 % by volume)"
PR101	1825; x-cut 1315 30' down from V12 on west rib	Quartz-calcite vein	Quartz-calcite-barite(?)-green mineral in fractured magnetite-hematite ore; also vug-filling
PR102	1825; x-cut 1315	Massive magnetite ore	"Massive magnetite ore, about 5' N of PR-101"
PR104	1825; V12-1315 southwest intersection of drifts	Quartz vein cutting magnetite ore	Late quartz vein with dustings of exotic minerals in magnetite ore
PR105	1825; V12-1315 southwest intersection of drifts	Quartz vein cutting magnetite ore	Biotite + quartz in vein in magnetite ore
PR106	1825 on V12@ 1315 northeast rib	Massive quartz vein 	Massive quartz vein with vug filling in magnetite-hematite ore; 2 stages quartz?
PR107	1825	Mafic dike 	"Mafic dike, 8""-12"" thick, 80 dip S"
PR108	1825; + 1120-V12	Pyrite-bearing quartz vein in magnetite ore	"Quartz vein, approx.3 cm wide, in massive magnetite-hem; vein with approx. 3% py"
PR109	1825; + 1120-V12 northeast intersection	Massive ore 	"Massive magnetite-hematite ore, heavily jointed & fractured, with vugs/veins of quartz+calcite"
PR011	2275; main haulage 	1825 porphyry 	"Chocolate-colored aphanitic ""trachyte"", 10-20' east of contact with 2275 porphyry "
PR110	1825; near intersection of AD and V14	Silicified rhyolite	Silicified & quartz veined rhyolite at contact with hematite-magnetite-Cu ore
PR111	1825; near intersection of AD and V14	Silicified rhyolite (2275 porphyry)	"Reddened, silicified 2275 porphyry"
PR112	1825; near intersection of AD and V14	Least altered 2275 rhyolite 	Least altered 2275 porphyry near ore zone
PR113	1825; near intersection of AD and V14	Massive silicified zone 	"Completely silicified rhyolite, with trace relict porphyritic texture"
PR114	1975; AD @ lunch room	Quartz-kspar vein 	Quartz-kspar vein in altered rhyolite (represents fluids from silicified zone alteration)
PR012	2275;śmain haulage 	Black porphyry 	Chemistry indicates is 1675 porphyry even though 25' s of 1675 contact 
PR121	1975; X13@1311	Barite-calcite-quartz vug 	Large (1' wide) vug with quartz-calcite-barite in hematite zone
PR122	2675; REE breccia pipe	Hematite breccia with quartz in REE breccia pipe	Hem breccia with quartz? + chlorite+actinolite
PR123	2675; REE breccia pipe	Hematite+magnetite breccia with rhyolite in REE breccia pipe	Hematite-magnetite breccia with clasts of rhyolite and reddened rhyolite; sulfide-bearing
PR124	2675; REE breccia pipe	Clasts of hematite+pyrite+chalcopyrite+ breccia	Hem-magnetite breccia with pyrite-chalcophyrite(?)-rhyolite clasts-ap-calcite
PR125	2675; REE breccia pipe	Reddened rhyolite clast in breccia pipe	Reddened rhyolite with hematite-pyrite-kspar alteration
PR126	2675; REE breccia pipe	REE breccia pipe material	"REE breccia pipe (500 cps), channel sample 3' zone along rib; dark green matrix with barite"
PR127	2675; REE breccia pipe	REE breccia pipe material	REE breccia pipe (700 cps); along interface with hematite breccia
PR128	2675; REE breccia pipe	REE breccia pipe material	REE breccia with altered rhyolite clast rimmed by barite in barite-rich matrix
PR129	2675; eastern most end of AD drift	Massive quartz 	Massive silicified zone with ghosts of rhyolite clasts replaced by quartz with grayish tinge from hematite; fractures coated with sericite
PR013	2275; at Y on main 	1675 porphyry 	"Chocolate-brown colored groundmass, vs. Black for black porphyry"
PR130	2675; eastern most end	Silicified reddened rhyolite	Silicified reddened rhyolite with no sulfides seen in contact with hem-cemented breccia 
PR131	2675; eastern most end	Open-space quartz 	Massive whitish quartz with traces of kspar from along fractures. Sharp contacts with altered rhyolite 
PR132	2675; eastern most end	Mafic dike 	Mafic dike that cuts reddened silicified rhyolite; dike cut by reverse fault (photo)
PR133	2675 decline	Aplite dike 	Aplite cuts silicified rhyolite on incline from 2675 level
PR134	2440; UD15E	Latest quartz vein post-REE breccia pipe)	Quartz vein that cuts barite-REE breccia pipe; Stage 4 quartz (picture of quartz vein cutting REE breccia pipe material)
PR135	2440; UD15E	REE breccia	"REE-barite breccia pipe material, 2500 cps"
PR136	2440; UD15E	Quartz vein (pre-REE breccia pipe)	"Quartz vein, grayish in color, that cuts hematite ore but is cut by ree breccia pipe (Stage 2 or 3 quartz)"
PR137A 	2440; UD15E	Hematite ore cut by calcite-barite veins	Calcite-barite veins cut pre-REE breccia pipe (Stage 2) quartz veins in hematite ore 
PR137B 	2440; UD15E	Hematite ore cut by veins	Calcite-barite veins cut pre-REE quartz veins in hematite ore
PR138	2440; main drift 	Silicified rhyolite	"Massive silicification of rhyolite with sericite alteration, cut by REE breccia pipe "
PR139	2440; main drift 	Calcite-barite pod	Calcite-barite pod in hematite-magnetite ore
PR014	2275; N end X11 	Silica+hem	"Silicified zone, silica+hematite alteration halo on north side magnetite ore "
PR140	2440; just NW of incline to 2475	Massive silicification zone	Massive silicification zone replacing rhyolite; open-space-bearing grayish to whitish quartz with traces of altered rhyolite
PR141	2440; @ 2475 decline	Silicified rhyolite	"Silicified rhyolite, pinkish, with thin clear veinlets & patches of white quartz"
PR142	no sample	no sample	no sample
PR143	2440; southern-most end of OP23 near intersection with UD7VW 	Amphibole zone	Clasts of amphibole rock in magnetite-apatite matrix
PR144	2440; + UD12W-OP23	Magnetite ore	"Magnetite ore from core, magnetite-py (8%) with later ap-calcite-quartz(?), chip sample "
PR145	2125; AD	1825  porphyry	Porphyritic  rhyolite (unit 1825)
PR146	2125; AD	Aplite  dike	"Aplite  dike  cuts  2275  Porphyry, which shows silicic alteration associated with margin of dike"
PR147	2125;  X13  drift 	Hematite ore	"Massive foliated hematite with calcite+barite(?), gangue  in  vugs, seams, pods, and veinlets"
PR148	2125; X11;  1124  x-cut; S.W. corner	Massive ore	"Foliated magnetite-hematite ore.  Because see no tectonic foliation in any other units, must be flow foliation?  Seams  of  late quartz-calcite. Apatite occurs in late vug."
PR149	2125; X11; 1124  x-cut 	Late state vug filling in massive Fe ore	"Vug  filling  of  quartz+calcite+biotite+chalcopyrite+hematite;  host rock of  magnetite-hematite  ore,  cp  growing  on  quartz "
PR015	2275; NW end V12 	Silica+hem	Silicified zone
PR150	2125; AD drift	Quartz-k feldspar  vein in 2275 Porphyry	"Quartz-kspar  vein cuts  reddened  rhyolite  (2275  Porphyry), with  pyrite"
PR151	2125; AD drift	Massive quartz pod in 2275 Porphyry	Massive white quartz pod shaped like a snake cutting 2275 Porphyry.  Assume is from main stage quartz alteration event
PR152	2125; AD drift	2275 Porphyry	Freshest  2275  Porphyry  available 
PR153	2275; + ADE-V12S	Massive magnetite ore	Magnetite  ore  with interstitial quartz-apatite ; mullions  of  fault  surfaces  cut  massive  silicified zone.  Deformation =  post-silicic phase
PR154	2275; V12 drift @ ADE	REE breccia pipe	"REE breccia pipe (800 cps), with phlogopite, K-feldspar; in contact with hematite ore "
PR155	2275; intersection of ADE and V12 drift; on V12 drift	Silicified rhyolite	"Intensely silicified rhyolite,  penetrative fabric cuts silicification "
PR156	2275;  X13; 1320  x-cut 	Massive magnetite ore (core of deposit)	"Magnetite-hematite ore in core of the deposit; minor apatite disseminated,  approx. 3% py, tr quartz"
PR157	2275; hole; @ X11-V12 intersection	Quartz  vein/Aplite   dike	Quartz   vein/aplite   dike   with   quartz-py-bio-calcite-molybdenite
PR158	2275; +  X11-V12	Massive  amphibole zone rock	Course-grained actinolite  with  magnetite-quartz  from  amphibole zone hangingwall;  trace quartz+pyrite in interstitial veins
PR159	2275;  V12;  1325  x-cut 	Ore breccia	"Rhyolite  porphyry  clasts  in  magnetite  matrix,  clasts  with  chlorite  alteration  rims"
PR016	2275; @ Shaft #1 	2275 porphyry	Freshest sample of 2275 porphyry seen
PR160	2370; AD	Quartz in REE breccia pipe	REE breccia pipe with  quartz
PR161	2370; AD; end	Banded rhyolitic country rocks	"Banded  rocks, with pyrite-magnetite-plag,  lineation approximately horizontal along foliation  plane"
PR162	2370; AD; end	Banded rhyolitic country rocks	"Banded rhyolitic country rocks next to massive magnetite ore, banding made up of quartz-amph bands  with py-cp-kspar"
PR163	2370; AD; end	Massive ore	"Massive magnetite-hematite ore, with disseminated  seams and pods  of  ap-quartz; act  intergrown with magnetite "
PR164	2370; next to 3001SX cut	Silicified rhyolite	"Massive  silicification  of  rhyolite,  Main  Stage quartz alteration,  grayish  quartz,  next  to sample PR-165"
PR165	2370; next to 3001SX cut	K-feldspar-quartz   vein	Vein of  quartz-K-feldspar-biotite; approximately 25 cm thick (Stage 2 quartz?)
PR166	2370; 30PX  x-cut	Massive silicification zone	"Massive gray silicified zone in host rhyolite next to quartz-K-feldspar  vein, adjacent to REE breccia  pipe"
PR167	2370; 30PX  x-cut	Lte quartz vein	"Quartz-K-feldspar vein cutting  massive silicification zone,  clear  quartz  vein  with  gray  quartz  overgrowths (Stage 3 quartz?)"
PR168	2370; 30PX  x-cut	REE breccia pipe	"REE  breccia pipe (3000 cps), = finely comminuted breccia, with barite?/kspar"
PR169	2370; 30PX  x-cut	late stage barite crystals	"Barite crystals  for R.O. Rye, growing  in  vug; post-quartz-kspar  stage"
PR017	2370; PDD-6 	Silicified rhyolite breccia	Contains disseminated pyrite-chlorite-quartz and later fracture-controlled material in breccia 
PR170	2370; 30PX x-cut	Xenotime	Xenotime crystals on early quartz+K-feldspar
PR171	2275 V12 drift	Ampibole zone rocks in magnetite ore	large block carried out from the 2275 V12 drift.  Amphibole zone rock clasts in magnetite ore from hanging wall zone.
PR172	2275; 1st drift N of 1325 PD off X13	Bladed hematite	Bladed (secondary) hematite in magnetite/hematite ore.  
PR173	2275 @ V12 & ADE	REE Breccia pipe	REE Breccia pipe (ADE drift). GSA stop 2; Sample over 1m sq. of breccia pipe.
PR174	2275; intersection of V12+1325PD	Chloritic clast in fine-grained magnetite	Angularand elongated chloritized rhyolite wall rock clasts and amphibole zone clasts partially digested and aligned in imbricate vertical structure.  Clasts have internal folication parallel to imbrication direction.  Amphibole zone alteration preceeded emplacement of hydrothermal ore body. 
PR175	2275; X1116 drift off V12	REE breccia pipe	Dark green hard REE breccia pipe.  Jim Hussman found Au and Te here.
PR176	2275; X15	Amphibole zone rock	Footwall zone of ore deposits; Amphibole zone rock with large coarse-grained amphibole with interstitial dark red apatite with silicification--quartz (Main Stage quartz) is younger than amphibole zone alteration
PR176A	2275; X15	Course-grained amphibole zone rock	Course-grained amphibole zone rock
PR176B	2275; X15	Silicified amphibole zone rock	Amphibole rock with superimposed Main Stage quartz silicification (country rock altered to amphibole zone rock before massive silicification
PR176C	2275; X15	Silicified amphibole zone rock	Silicified amphibole zone rock cut by later smoky quartz vein (2nd Stage quartz).  Smoky quartz is later forming cavity filling crystals
PR177	2275; V14 and X15 on small drift S of main haulage drift	Barite-rich REE breccia pipe	"Barite-rich REE breccia pipe with large clasts of Main Stage quartz blocks (cobble sized) in matrix of barite.  Dark blue fluorite, pyrite, and chalcopyrite grown on top of barite; Breccia pipes emplaced after Main Stage quartz alteration."
PR177A	2275; V14 and X15 on small drift S of main haulage drift	Barite-rich REE breccia pipe	Fragle sampls of flourite on barite with early clasts of Main-Stage quartz
PR177B	2275; V14 and X15 on small drift S of main haulage drift	Barite-rich REE breccia pipe	Large sample of barite+chalcopyrite+pyrite
PR177C	2275; V14 and X15 on small drift S of main haulage drift	Barite-rich REE breccia pipe	Composite sample for geochemistry containing barite+flourite+chalcopyrite+pyrite+quartz
PR178	2505; intersection of AD drift with DX13 along S wall 40' S of intersection	REE breccia pipe	"Same pipe as exposed on 2275 (the ""Au+Te pipe"" of Hussman). Rock flour-like matrix with dark green mica, whispy clasts of hematite ore (3-4"" long), clasts of gray quartz+K-feldspar Main Stage quartz (pipes post Si-K silicification). Pipe cuts pseudobreccia as well."
PR178A	2505; intersection of AD drift with DX13 along S wall 40' S of intersection	REE breccia pipe	Composite sample over 1m square of REE breccia pipe material
PR178B	2505; intersection of AD drift with DX13 along S wall 40' S of intersection	REE breccia pipe (pyrite sample)	Pyrite sampled from REE-breccia pipe matrix for isotope work in equilibrium with barite
PR179A	2475; X12 drift	REE breccia pipe	Don't think is same pipe as on 2505 or 2270.  Continuous with 2440 pipe.  Pyrite-rich zone in REE breccia pipe.
PR179B	2475; X12 drift	REE breccia pipe	Composite sample for geochemistry 
PR018	2370; PDD-6 	Magnetite ore	"Massive magnetite ore, magnetite >> hem, chip of late quartz+apatite"
PR180	2475; X12 drift	West end Porphyry	Hematite alteration veinlets throughout fractured rhyolite porphyry. 
PR181	2275; 1116 drift @X11	Silicified REE breccia pipe	"Contact between breccia pipe and hematite-altered ryholite host rock seems injected.  Fault present on side of REE breccia pipe, but is later.  No evidence of REE breccia pipe coming up along fault."
PR182	"2370, Off the AD drift in small storage drift east of PDD-6"	REE breccia pipe	"Altered, friable breccia pipe material"
PR019	2370; PDD-6 	Transition zone ore	"Change from hematite to magnetite ore, magnetite=hematite, hematite replaces magnetite"
PR002	2275; X11 	1975 porphyry 	"Freshest rhyolitic ash-flow tuff available, from hanging wall zone of deposit.  Contains shards, lithic frags, lithophysae, rare quartz phenocrysts hydrothermal(?) hematite with alteration halo around, moderate to strong alteration amph and chlorite alteration of clasts with magnetite matrix"
PR020	2370; PDD-6 	Silicified rhyolite breccia	"Altered rocks, 10,000 counts per second (cps) on scintillometer, apatite(?)-bearing, towards silicified and REE zones from ore "
PR021 	2370; PDD-6 	Apatite-zone rocks	"Hematite + apatite replacing magnetite, REE zone, dark pink mineral; 5,000 cps"
PR022A 	2275; AD drift 	Volcanoclastic breccia	"Hematitized volcaniclastic layered sed breccia clasts, matrix = hematite, after magnetite(?)"
PR022B	2370; PDD-6 	Rhyolite breccia 	"Rhyolite breccia with hematite matrix, clasts brick-red, matrix dominant "
PR023 	2275; V12 	Hangingwall breccia 	"Biotite schist, 1875 Porphyry clasts in magnetite+apatite+pyrite+chalcopyrite matrix"
PR024 	2275; V12 	Hangingwall breccia 	Country rocks clasts with chloritic alteration in magnetite+apatite+pyrite+chalcopyrite matrix
PR025A 	2275; end X11	Aplite dike	"Fine-grained pink aplite, cross-cuts amphibole hanging wall rocks"
PR025B 	2370; AD 	Pseudobreccla	Country rock clasts are characterized by in-situ iron oxide fracture-filling and are unrotate; wall rocks replaced by hematite-magnetite
PR026 	2370; AD 	Pseudobreccia 	1975 Porphyry clasts with hematite-actinolite-quartz-pyrite-calcite-chalcopyrite-biotite matrix
PR027A 	2370; AD 	Late vein	Quartz -barite-flourite-chalcopyrite-xenotime-phlogopite-muscovite-allanite 
PR027B 	2370; AD 	Silicified rhyolite cut by quartz veins	Grab sample over 1 m of silicified country rocks cut by quartz-rich veins with xenotime
PR028 	2505	Polylithic breccia	Polylithic breccia
PR029	2675; eastern most end	Quartz vein	Late-stage major quartz vein
PR003	2275; X11 	2275 porphyry	Rhyolite with moderate to strong alteration of hydrothermal hematite
PR030	2675; eastern most end	Sulfide-rich breccia	Sulfide-rich breccia with clasts of hematite and porphyry; clasts rounded and rotated
PR031 	2475; intersection DX5-X11 	Brecciated mafic dike	"Brecciaed mafic dike, chlorite-calcite-pyrite matrix, rare rhyolite clasts; dike cuts magnetite ore with sharp contact"
PR032	2475; SE corner of DX5-AD intersection	Coarse-grained apatite 	Apatite forms clasts with hematite in breccia pipe; apatite looks residual from magnetite-apatite ore; magnetite altered to hematite
PR033A 	2440; UD15E NE corner of UD15-AD intersection	Magnetite-hematite breccia	Magnetite-hematite breccia
PR033B 	2440; UD15E NE corner of UD15-AD intersection	Rhyolite clast in red breccia	Rhyolite clast in magnetite breccia; ore breccia intruded by red breccia
PR033C 	2440; UD15E NE corner of UD15-AD intersection	Magnetite/hematite breccia	"Magnetite to hematite along pipe margins; quartz veins, apatite pods in magnetite zone; hematite clasts to 20 inches "
PR033D 	2440; UD15E NE corner of UD15-AD intersection	REE breccia pipe	Porphyry clasts in matrix of rock flour+barite+monazite(?)+quartz+mica+clay+white mica
PR034	2440	Silicified porphyry breccia in REE breccia pipe	"Silicified breccia with porphyry clasts, quartz-hematite matrix, tourm along joints, 10,000 cps "
PR035	2440; UD14W	Magnetite ore 	"Brecciated sulfide-bearing magnetite ore with minor clasts of porphyry, barite+apatite forms pods in ore"
PR036	2440; 190 ft from intersection of UD14W with AX2	Brecciated ore 	Brecciated ore with barite matrix
PR037	2440; intersection UD14W-UDC	Magnetite ore zone	Sulfide-bearing magnetite ore zone
PR038	2440; UD14W	Breccia	Breccia with country rocks-magnetite-pyrite-apatite-hematite
PR039	2275; AD drift	Breccia with brick-red matrix 	"Rhyolite clasts in hem-quartz or monazite or kspar matrix, cut by cal veinlets "
PR004	2275; + X11-V12 	"Amphibole-quartz-magnetite, skarn? "	"Amphibole and chlorite alteration of clasts with magnetite matrix, hangingwall zone"
PR040	2275	Laminated microbreccia 	"Volcaniclastic sedimentary block in hematite breccia zone, laminated quartz-hematite rocks, with martite-c.g. Magnetite xtals "
PR041	2370; AD	Mafic vein/dike (related to REE breccia?)	"Biotite+phlogopite, green vein with pink secondary kspar or barite"
PR041A 	2370; AD	1975? Porphyry 	Host porphyry in crackle breccia with hematite invading porphyry along fractures
PR041B 	2370; AD	Pseudobreccia 	Sulfide-rich + magnetite
PR042	2370; AD	Pseudobreccia 	Sulfide-rich + magnetite
PR043	2370; +2400AI-AD	Amphibole-rich rock 	Amphibole-apatite-sulfide rich rock.  What was the protolith?
PR044	2370; +2400AI-AD	Aplite dike 	"6""-wide aplite dike that cuts amphibole rocks, w' quartz-sulfide veinlet "
PR045	2370; AD drift	Aplite dike	Aplite dike cuts silic alteraion (intrusion post-silicification of deposit)
PR046	2440; UD14W	Soft REE breccia pipe material	"Soft REE-bearing breccia pipe with rhyolite clasts, fluidized breccia texture; cuts magnetite ore "
PR048	2275; E-end AD	Matrix-supported breccia	Breccia with chlorite matrix with kspar(?) Phenocrysts; high REE; near magnetite-silicified zone; looks like has granite xenolithic clasts
PR049	2370; AD drift	Mafic vein/dike (related to REE breccia?)	"Quartz-white mica-pyrite veinlets cut all stages breccia development; 1,400 cps"
PR005	2275; V12@ X11	Amphibole-apatite-magnetite zone	Epitaxial actinolite growing into magnetite+aptite; sample of amphibole+apatite+magnetite+chalcopyrite from hangingwall zone
PR050	2370; AD drift	Vuggy barite 	Barite in silicified zone; post-xenotime; post silicification
PR051	2370; AD drift	Pseudobreccia	Rhyolite clasts with quartz-hematite veins; clasts show no rotation or rounding
PR052	2370; AD drift	Pseudobreccia	Rhyolite clasts with quartz-hematite veins; clasts show no rotation or rounding
PR053A 	2370; PDD-5	Magnetite ore	"Magnetite-apatite-calcite+later calcite, surrounded by fine grainted apatite+magnetite ore "
PR053B 	2370; PDD-5	Magnetite-apatite ore 	"Fine-grained equigranular ore, slightly richer in apatite than normal ore"
PR054	2370; PDD-5 AD intersection	Pseudobreccia	"1975 Rhyolite unit? Porphyry breccia clasts in hem-py matrix, py greater than normal "
PR055	2370; PDD-5 AD intersection	Pyrite-barite-hematite 	Pyrite-barite-hematite in transition zone 
PR056	2370; PDD-5 18' south of intersection of AD on east rib	Pyrite-barite-hematite	Sample from transition zone from ore to country rock
PR057	2370; PDD-5 18' south of intersection of AD on east rib	Hematite pseudo breccia 	Hematite+pyrite+barite(?) in transition zone 18 feet down east rib 
PR058	2370; PDD-5 south of intersection of AD on east rib	Transition zone between pseudobreccia and massive ore	Transition breccia zone of magnetite+hematite+pyrite.  Hematite looks later than magnetite
PR059A 	2370; PDD-5 18' south of intersection of AD on east rib	Chlorite-rich zone	Chlorite-rich zone
PR059B 	2370; PDD-5 AD 65' south of intersection on west rib	Magnetite breccia zone	Barite-rich vein in magnetite breccia zone with hematite veinlets replacing magnetite
PR006	2275; end X11	Pyrite-rich vein	Pyrite-calcite-biotite-chalcopyrite vein from aplite dike cutting massive magnetite-actinolite clast in skarn zone
PR060	2370; PDD-5 AD 70' south of intersection on east rib	Aplite dike	Aplite dike
PR061	2370; PDD-5 135' south of intersection with AD	Magnetite vein 	Magnetite veins in chlorite-rich clasts with later apatite/barite?
PR062	2370; PDD-5 145' south of intersection with AD	Massive ore 	"Typical massive magnetite ore; magnetite-py-hem-quartz-ap, typical high grade"
PR063	2370; PDD-5 180' south of intersection with AD	Magnetite ore 	"Massive ore, magnetite-pyrite-quartz, quartz interstitial with magnetite; contemporaneous"
PR064	2370; PDD-5 20' north of PDD-5 cross drift	Massive ore 	"Massive ore, magnetite-pyrite-hematite"
PR065	2370; PDD-5 at PDD5 cross drift	Main ore zone 	Magnetite-ap
PR066	2370; PDD-6 at corner of AD drift	Vein (quartz-rich)	Quartz-barite-chlorite-hematite vein in altered rhyolite
PR067	2370; PDD-6 west rib	Host altered rhyolite 	Vein in altered rhyolite host rock to ore deposit
PR068	2370; PDD-6 west rib 15' down from AD drift	Tourmaline-rich vein 	"Tourmaline-rich vein in ""replacement"" pegmatite, altered zone @ pegmatite "
PR069	2370; PDD-6 west rib 20' down from AD drift	Pseudobreccia	Hematite infiltrating rhyolite
PR007	2275; end X11 	Aplite dike	"Aplite chip sample, dike cuts hangingwall breccia with sharp contact and no observed alteration "
PR070	2370; PDD-6	Hematite ore	Hematite-rich ore with vein of hematite+barite+calcite
PR071	2370; PDD-6	REE breccia pipe 	REE-rich breccia pipe 
PR072	2370; PDD-6	REE breccia pipe 	REE-rich breccia pipe 
PR073	2370; PDD-6	Magnetite ore zone	Apatite-bearing magnetite ore
PR074	2370; PDD-6	Magnetite ore zone	"Apatite-bearing magnetite ore, gradational transition between hematite and magnetite zones "
PR075	2370; PDD-6	Magnetite ore zone near REE pipe	"Magnetite ore zone material adjacent to REE breccia pipe, alteration phases include magnetite-hematite-chlorite"
PR076	2370; PDD-6	Magnetite ore zone	Pyrite-bearing magnetite ore 25' south of REE breccia pipe contact
PR077A 	2370; PDD-6	Massive magnetite ore 	"Magnetite-rich ore, 40' south of REE breccia pipe "
PR077B	2370; PDD-6	Coarse-grained apatite from ore zone	Coarse-grained apatite from magnetite ore zone
PR078A	2370; PDD-6	Quartz vein	"Smoky quartz-barite-calcite vein cuts magnetite ore, magnetite ore clasts in vein, 45' S of breccia pipe "
PR078B	2370; PDD-6	Quartz vein	"Small quartz vein in magnetite, hematite alteration envelope around vein?"
PR079	2370; PDD-6'	Massive ore	"Magnetite-py, 100' S of REE breccia pipe"
PR008	2275; + X11E-X11 	1975 porphyry 	"Aphanitic rhyolite.  Sample is weakly altered, with possible flow banding; protolith was flow-banded welded tuff"
PR080	2370; PDD-6	Magnetite ore zone	"Magnetite ore, relatively enriched in pyrite"
PR081	2370; PDD-6	Nuelle sample: Mafic dike	"Dark green, aphanitic mafic dike, cuts to PDD-5, thin, skinny dike "
PR082A 	2370; PDD-6	Magnetite ore zone	"Clastic fine-grained magnetite ore, with lots sulfides, mineral phases=magnetite+apatite+pyrite, magnetite-pyrite matrix "
PR082B	2370; PDD-6	Magnetite ore zone	"Equigranular magnetite ore, with lots sulfides, with magnetite-apatite-pyrite clasts? In f.g. Magnetite-py matrix "
PR083	2370; OPAD north of AD drift	Late-stage barite-fluorite	"Late barite-fluorite-argillite, fluorite on barite blades"
PR084	2370; OPAD north of AD drift	1975 porphyry	Least altered 1975 porphyry country rock; fine-grained rhyolite with salmon colored feldspar phenocrysts (1-2 mm dia).
PR085	2275; V12-X11 intersection	Aplite dike	"Aplite dike cut by quartz-biotite-pyrite+/-chalcopyrite vein, aplite cuts amph breccia"
PR086	2275; X11 stope	Amphibole zone	"Magnetite-chalcopyrite-amphibole from pile end of X11 stope, early amph zone; note: 2 gen. Chalcopyrite"
PR087	2275; V12	Early magnetite ore stage	"Early ore stage of magnetite ore body, mineral phases = magnetite-apatite-pyrite"
PR088	2275; V12	Amphibole zone 	Amphibole zone with amphibole-magnetite-apatite-pyrite
PR089	2275; X11	Actinolite crystals	"Large actinolite crystals with late calcite; actinolite to 2"" blades with vuggy calcite "
PR090	2275; X11	Late-stage vuggy calcite	Late-stage vuggy calcite
PR091	2275; AD drift 	2275 porphyry	Freshest rhyolite on drift to shaft 1
PR092	2275; AD drift 	2275 porphyry	Freshest rhyolite on drift to shaft 1
PR009A 	2275; X11E; #601 	1975 porphyry 	Lithophysal-bearing devitrified rhyolite tuff
PR009B 	2275; X11E; #601 	1975 porphyry 	Rhyolite tuff with lithophysae replaced by hematite
193488	"2320 ft sublevel, AD drift"	REE-bearing breccia pipe	"Pea Ridge Mine, 2320 ft sublevel, ad(?) drift REE-bearing breccia pipe 1/28/1991"
193488B	"2320 ft sublevel, AD drift"	REE-bearing breccia pipe	"Pea Ridge Mine, 2320 ft sublevel AO drift, REE-bearing breccia pipe, 1/28/91"
193419	"Pea Ridge Mine, hematite, qz?-hm-ap, pod 2275' level, intersection of v12 and 1120pd, for chemistry, pod in magnetite zone 12/4/90"	Pea Ridge: Quartz-hematite-apatite pod in magnetite zone	"Pea Ridge Mine, hematite, qz?-hm-ap, pod 2275' level, intersection of v12 and 1120pd, for chemistry, pod in magnetite zone 12/4/90"
193420	2370 AD drift	Aplite dike	Nuelle sample: aplite dike
193479	2440 level	" ""Fresh"" mafic dike 2440 level"	"Nuelle sample: ""Fresh"" mafic dike 2440 level"
193481	2575 level	Mafic dike 2575 level	Nuelle sample: Mafic dike 2575 level
193484	2275 level	Altered aplite dike 2275 level	Nuelle sample: Altered aplite dike
193487	2320 Sublevel	Amphibole zone	"Nuelle sample: Footwall, incipient amphibole zone, 1/28/1991"
193486	"2275 ft level, X11181D"	REE-bearing breccia pipe	"Pea Ridge Mine, 2275 ft level, X11181D high count area of REE-bearing breccia pipe, 1/28/1991"
194406	2275' Level 1116SD @ 30' FROM V12 drift	Quartz+apatite vug filling in magnetite ore zone	Nuelle sample: Quartz-hematite-apatite pod in magnetite ore (2175' LEVEL V12@1118)
194407	"2175 level, v12, near 1118"	Quartz+hematite+chalcopyrite+apatite vug filling in magnetite ore zone	"Nuelle sample: Quartz+hematite+chalcopyrite+apatite microcrystalline vug fill in magnetite ore zone, 2175 level, v12, near 1118, 1/28/1991"
193488	2275 ft level near 1118 drift	Barite in magnetite ore	"Nuelle sample: Magnetite ore, 2275 ft level, barite in mag. near 1118"
193485	2275 ft level near 1118 near	Barite in magnetite ore	"Nuelle sample: Magnetite ore, 2275 ft level, barite in mag. near 1118"
193486	"2275 ft level, X1118 SD drift"	REE-bearing breccia pipe	Nuelle sample: High count area +REE-bearing breccia pipe
194406	"2275 ft level, 1116SD, 30' from V12 drift"	Quartz+apatite vug filling in magnetite ore zone	Nuelle sample: Quartz+apatite pod in magnetite ore zone
111850	"2275 ft level, X-11"	REE-bearing breccia pipe with pyrite+magnetite	"Nuelle sample: REE-bearing breccia pipe, pyrite, magneite, "
1983421	2370 AD drift	Sericitize aplite dike 2370 AD drift	Nuelle sample: Sericitize aplite dike 2370 AD drift