Bournonite

#BAC61572

Availability: Available
Price: $15.00

Locality: Huanzala mine, Huallanca dist., Huánuco, Peru
Formula: CuPbSbS₃
Size: 3 x 1.5 x 1.7 cm - Thumbnail
Tagged: sulfide, copper

Steel grey twinned crystals to 5mm.

Bournonite at Dakota Matrix Bournonite at WebMineral Bournonite at MinDat

Breithauptite

#7908

SOLD

Availability: Sold

Featured: Featured in Special Editions
Locality: Cobalt-Gowganda dist., Ontario, Canada
Formula: NiSb
Size: 7.5 x 4.5 x 3.5 cm - Sm Cabinet

A rich mass of Breithauptite from the Cobalt district of Ontario showing veinlets and rosette-like growth habits.

Breithauptite at Dakota Matrix Breithauptite at WebMineral Breithauptite at MinDat

Brucite

#RW62178

SOLD

Availability: Sold

Locality: Maxwell quarry, Wakefield, Quebec, Canada
Formula: Mg(OH)₂
Size: 10 x 6 x 2.5 cm - Cabinet

White cleavable mass of platy Brucite.

Brucite at WebMineral Brucite at MinDat

Bulletin 765 (Spiral-Bound)

#B14

SOLD

Availability: Sold

Size: Not Specified
Tagged: maps books, black hills, history, maps, books, book, map

Geology of the Region Around Lead, South Dakota, and its Bearing on the Homestake Ore Body

By Sidney Page

Spiral-Bound, Department of the Interior, Hubert Work, Secretary, US Geological Survey, George Otis Smith, Director, Washington Government Printing Office 1924 reprint

The results of the first systematic geologic investigation of the Homestake mine were published in 1904, however this investigation did not include the deeper workings of the Homestake mine. In 1912, permission was granted for Sidney Paige to discover evidence in support of new hypothesis regarding the origin of the ore. It is much desired that at some future date a more detailed investigation of this mine, perhaps the greatest gold mine in the world, be obtained and published.

Geology of the Region Around Lead, South Dakota, and its Bearing on the Homestake Ore Body is available in limited quantities.