Origin: Majuba Hill mine, Pershing Co., South Dakota, USA
Sample size: about 5 x 5 x 2 cm, crystals less than 1 mm
Origin: Copper Stope, Majuba Hill mine, Pershing Co., Nevada, United States
Eaton Collection
Sample size: 4 x 3.5 x 1 cm (top), 5 x 4 x 2 cm (bottom)
Ex. DeVito collection
Bright green, spherical aggregates to 0.5 mm in diameter of
micro crystaline arthurite. Associated with olive green pointed blades of
olivenite to 2 mm long and sugary micro crystalline
gypsum
(?). Ex. DeVito collection
Origin: Majuba Hill mine, Pershing Co., Nevada, United States
Sample size: 7 x 4 x 2 cm (top), 4.5 x 3.5 x 2.5 cm (2nd row), 3 x 3 x 2.5 cm
(3rd row), 10 x 8 x 4 cm (4th row), 7 x 6 x 4 cm (5th row), 6 x 4 x 2 cm (6th
row), 5.5 x 3.5 x 2.5 cm (7th/8th/bottom row)