This specimen contains minute, less than 0.2 mm, metallic, shiny grains
throughout matrix. In the right photo, you see these grains as the brown
spots. These contain the ferroselite, which are not visible in the photo
Origin: Repete mine, San Juan Co., Utah, United States
Sample size: 4.5 x 2.5 x 1 cm
Brownish micro crystals interstitial to sand grains. Backside contains
raspberry red
cobaltomenite crystals in 1 mm aggregates.
Origin: Parco mine, Grand Co., Utah, United States
Sample size: 5 x 4.5 x 2 cm
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