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Mineralpedia Details for Nakauriite

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Nakauriite

Nakauriite

Named after the type locality at the Nakauri mine on Honshu Island, Japan. This rare mineral occurs as filling fractures in serpentinite at its type locality and on chromatite from serpentinite at a Scottish locality at Hagdale Quarry. Additional localities include the United States, Italy, and Austria. Nakauriite occurs associated with chrysotile, magnesite, artinite, pyroaurite, brochantite, malachite, callaghanite, hydromagnesite, antigorite, talc, quartz, theophrastite, pentlandite, and heazlewoodite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/nakauriite.pdf

Formula
Cu8(SO4)4(CO3)(OH)6ยท48H2
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Fibrous, Microscopic Crystals 
Color
sky blue, light blue 
Class
Orthorhombic 
Hardness
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Nakauriite from Nakauri mine, Aichi prefecture, Honshu Island, Japan

Nakauriite
            from Nakauri mine, Aichi prefecture, Honshu Island, Japan
Special Info
Type Locality

Blue crusts on serpentine matrix. This mineral has 48 water molecules and is a rather rare mineral worldwide. This is type locality.

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