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Brewsterite Whitesmith Mine
Rock formation- Commonly forms as a late-crystallizing mineral in igneous rocks (via hydrothermal fluids and pegmatites) and within sedimentary carbonate rocks like limestone and dolostones
Kermesite from khovu aksy tuva Russia
Rock formation: It forms as a secondary mineral in the oxidation zones of lead ore deposits
5cm x 5cm x 3
Cummingtonite Brewsterite Whitesmith MineCummingtonite from lead mining district Lawrence county South Dakota USA Size 6. 2cm x 3. 1cm x 2. 8cm Weight 63g You will receive the item in the photo Cummingtonite is a magnesium iron inosilicate amphibole mineral. Crystal system Monoclinic. It frequently appears in radiating fibrous or acicular (needle like) crystal habits. Mineral class Silicates. Specifically the inosilicate subclass and amphibole group. Rock formation commonly found in
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