GRADE AND TONNAGE MODEL OF Sn VEINS

By W. David Menzie and Bruce L. Reed

COMMENTS The grade-tonnage model for this deposit type is built with data from 43 deposits, or in some cases, districts. The imprecise definition of what constitutes a deposit has arisen here because many lodes were mined by a number of operators during the second half of the nineteenth century. Data for most deposits and districts consist of past production, although for some deposits, especially those still operating, reserves are included. Of the 43 deposits in the model, 27 are from Australia. These include most of the small tonnage deposits. This is thought to be an artifact of data reporting. For example, if data were available for many of the small deposits in Cornwall, the deposits would undoubtedly fall within the low tonnage part of the curve. See figs. 42, 43.

Figure 42. Tonnages of Sn vein deposits.

Figure 43. Tin grades of Sn vein deposits.

DEPOSITS

Name Country

Aberfoyle AUTS

Adventure Creek AUQL

Bakerville AUQL

Basset GRBR

Bloodwood Creek AUQL

Brownsville AUQL

Carn Brea-Tincroft GRBR

Carocoles BLVA

Conrad Lodes AUNW

Coolgarra Dist. AUQL

Dargo Range Dist. AUQL

Dolcoath GRBR

Emu Creek AUQL

Emu Dist. AUQL

Geevor GRBR

Glenlindale Dist. AUQL

Grenville GRBR

Gundle AUNW

Gurrumba Dist. AUQL

Hales Siding AUQL

Herberton AUQL

Irvine Bank AUQL