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Mineralpedia Details for Leucophoenicite

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Leucophoenicite

Leucophoenicite

Named for the Greek for leuco, meaning “white,” and the Greek for “purplish red” in reference to its color. Leucophoenicite is a rare contact metamorphic or late-stage hydrothermal mineral in veins and skarn in the zinc-manganese orebody at Franklin, New Jersey, USA which is the mineral’s type locality. Other localities include in Sweden, Italy, Namibia, and South Africa.

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

Formula
Mn2+7(SiO4)3(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Striated, Massive 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, brown, violet red, light red, dark pink 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
5.5-6 
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Leucophoenicite from N'Chwaning II mine, Kalahari Mn fields, Northern Cape Province, South Africa

Leucophoenicite
            from N'Chwaning II mine, Kalahari Mn fields, Northern Cape Province, South Africa

Deep red, sugary looking, micro crystals associated with the Rhodochrosite. The main Rhodochrosite crystal in the photo is 3mm.

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Leucophoenicite from Franklin, Sussex Co., New Jersey, United States

Leucophoenicite
            from Franklin, Sussex Co., New Jersey, United States

A colorful specimen composed of massive, light pink Leucophoenicite and blue "cyprene", a variety of Vesuvianite. Golden brown Adradite garnet composes the entire backsite of the specimen. Near the edge is deep reddish gold mica, presumably Phlogopite.

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