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Mineralpedia Details for Eosphorite

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Eosphorite

Eosphorite

Named in reference to the minerals pink color, after the Greek word eosphoros, which directly translates to lucifer, which in Latin refers to the “morning star”, or the dawn. Eosphorite is an uncommon mineral that is found in phosphate-bearing granite pegmatites, typically as a secondary mineral. Localities for Eosphorite include in: the United States which includes here in the Black Hills of South Dakota in the Tip Top and Hugo mines, Germany, Finland, Brazil, and Australia, among others. Associated minerals include rhodochosite, lithiophilite, triplodite, dickinsonite, albite, cookeite, apatite, beryllionite, hydroxylherderite, and tourmaline.

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

Formula
Mn2+AlPO4(OH)2┬ĚH2
Crystal System
Orthorhombic 
Crystal Habit
Massive - Fibrous, Prismatic, Striated 
Cleavage
Indistinct, None, None 
Luster
Vitreous - Resinous 
Color
light pink, yellow brown, light brown, light yellow, colorless 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal - Uneven 
Hardness
WebMineral
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Mindat
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Eosphorite from Araçuaí, Minas Gerais, Brazil

Eosphorite
            from Araçuaí, Minas Gerais, Brazil

Translucent root beer brown, long bladed, terminated crystals of Eosphorite to 3mm. with Roscherite on Rose quartz.

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Eosphorite from Lavra Da Ilha, Taquaral, Itinga, Minas Gerais, Brazil

Eosphorite
            from Lavra Da Ilha, Taquaral, Itinga, Minas Gerais, Brazil

Cluster of brown Eosphorite from 1 to 4mm with green spherical crystals of Rocherite to 2mm tucked in a nook of the Quartz.

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Eosphorite from Taquaral, Itinga, Minas Gerais, Brazil

Eosphorite
            from Taquaral, Itinga, Minas Gerais, Brazil

Orange brown prismatic crystals to 5mm. Taquaral is one of the better Eosphorite localities in the world.

A large specimen of rose Quartz with crystals to 2cm caked with thousands of Eosphorite crystals to 2mm. Pegmatite specimen.

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