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Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
Reserve from the case
Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
Dimensions: Gemstone: 9x4mm
there are grains of sand still wedged into one of the crevices of the specimen
Cerussite derives its color primarily from lead
Mapimi Durango
03-00028-F - 38x27 mm / 182
Samarskite-(Y) Mineral | 3.4 grams | South Platte Pegmatite Mining District | Jefferson County, Colorado, USA Henbury Impactite Dimensions: Gemstone: 9x4mmSamarskite is a radioactive rare earth mineral. Samarskite crystallizes in the orthorhombic dipyramidal class as black to yellowish brown stubby prisms although it is typically found as anhedral masses. Specimens with a high uranium content are typically metamict and appear coated with a yellow brown earthy rind. Samarskite (Y) is rich in rare earth elements (REEs), niobium (Nb), and tantalum (Ta)all of which are valuable in advanced electronics,
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