GRADE AND TONNAGE MODEL OF SEDIMENTARY EXHALATIVE Zn-Pb

By W. David Menzie and Dan L. Mosier

COMMENTS Deposits in this model include most commonly identified deposits of this type. Nevertheless, examination of the distribution of silver grade suggests the presence of two subtypes. Lead grades are significantly correlated with silver grades (r = 0.77, n = 39). See figs. 159-163.

Figure 159. Tonnages of sedimentary exhalative Zn-Pb deposits.

Figure 160. Zinc grades of sedimentary exhalative Zn-Pb deposits.

Figure 161. Lead grades of sedimentary exhalative Zn-Pb deposits.

Figure 162. Silver grades of sedimentary exhalative Zn-Pb deposits.

Figure 163. Copper grades of sedimentary exhalative Zn-Pb deposits.

DEPOSITS

Name Country

Balmat USNY

Baroi INDA

Big Syncline SAFR

Black Mtn. SAFR

Broken Hill SAFR

Broken Hill AUNT

Cirque CNBC

Dugald River AUQL

Duncan Lake CNBC

Dy CNYT

Faro CNYT

Fx CNBC

Grum CNYT

HB CNBC

Hilton AUQL

Homestake CNBC

Howards Pass CNYT

Jersey Emerald CNBC

King Fissure CNBC

Lady Loretta AUQL

MacMillan CNYT

Matt Berry CNYT

McArthur AUNT

Meggen GRMY

Mineral King CNBC

Mount Isa AUQL

Navan IRLD

Rajpura-Daiba INDA

Rammelsberg GRMY

Rampura-Agucha INDA

Red Dog USAK

Reeves MacDonald CNBC

Rosh Pinah NAMB

Silvermines IRLD

Squirrel Hills AUQL

Sullivan CNBC

Swim Lake CNYT

Tom CNYT

Tynagh IRLD

Vangorda CNYT

Woodcutters AUNT

Wigwam CNBC

Zawar INDA

Zawarmala INDA