SAMPLE_ID:  03MW0107

DATE: 6/4/1998

QUARTZ DIORITE

A quartz diorite, sample 03MW0107 is composed of plagioclase (50%), muscovite (20%), quartz (12%), biotite (10%), K-feldspar (3%), sphene (2%), oxides (2%), and epidote (1%). This sample shows severe alteration of plagioclase to grow biotite, muscovite/sericite, and epidote. No foliation is recognized. Biotite is pleochroic and probably has, along with epidote, replaced mafic minerals like hornblende. Fine-grained quartz shows undulose extinction.

Latitude: 41.66787

Longitude: -70.55009

Elevation of well site (m): 40.76

Elevation of the upper
bedrock surface (m): -57.23

Elevation of the
top of casing (m): 41.44

Total thickness of strata
penetrated by the well (m): 99.37

Zip file with full resolution image.