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Sussexite from Mine Hill, New Jersey
Sussexite is a manganese borate mineral MnBO2(OH). Crystals are monoclinic prismatic and typically fibrous in occurrence. Colour is white, pink, yellowish white with a pearly lustre. It has a Mohs hardness of 3 and a specific gravity of 3.12.
- http://webmineral.com/data/Sussexite.shtml Webmineral data
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