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Nikita Kumari Asked a Question October 14, 2021 11:11 pm
30 pts Arfvedsonite is a sodium amphibole mineral with composition: Na,(Fe,+Mg), Fe,+Si,O,OH), It crystallizes in the monoclinic prismatic crystal system and typically occurs as greenish black to bluish grey fibrous to radiating or stellate prisms. It has a specific gravity and a Mohs hardness of 5.5 to 6.
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