Black to grey needles in
anhydrite to about 0.5 mm and also within
stibnite
as indicated by reddish staining.
Ex. Kidwell collection
Bright, metallic, mirror-like, thin, platy crystals as cleavages to 1cm within
granular dull, steel grey
stibnite.
Origin: Huitzuco, Guerrero, Mexico (type locality)
Sample size: 5 x 3 x 3 cm (top), 5 x 4 x 3 cm (bottom)
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