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- Type: Black Tourmaline (Boron Silicate
One of the most intriguing features of the Muonionalusta meteorite is its fine Octahedrite 4A crystal structure
This Optical Calcite specimen highlights the geological wonders of Maharashtra
Weight: 727 grams
Vivianite sold-out-hidden - Type: Black Tourmaline (BoronSize: 14x10x23 cms Weight: 2. 108 kg Location: Cornwall, England Product Description: A rare and striking mineral specimen featuring vivianite, a hydrated iron phosphate, showcasing a vibrant green or blue green color. Geological Information: Location: Cornwall, Southwest England Type: Vivianite (Hydrated Iron Phosphate, Fe(PO)8HO) Formation: Hydrothermal veins in iron rich sedimentary and volcanic rocks, associated with copper and tin deposits Color: