Triphylite

Formula: Li(Fe²⁺,Mn²⁺)PO₄
Mineral class: phosphates
Crystal system: orthorhombic
Mohs scale: 4 - 5
Density (g/cm³): 3.50 - 3.58
Refractive index: 1.689 - 1.702
Cleavage: different
Colors: blue-grey, green-gray, brown, blackish
Transparency: transparent - translucent
Luster: vitreous - subresinous
Fluorescence: -
Pleochroism: -
Largest crystal: 6.50 m?
Deposits: worldwide
Discovery: 1834
1st Description: 1834
Name: a combination of the Greek words "tri" (three), and "phylon" (stem)

Triphylite Mineral

Size: 1.2 x 0.6 x 0.4 cm

Origin: Conselheiro Pena / Minas Gerais / Brazil

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Triphylite

Weight: 0.4 ct

Origin: Conselheiro Pena / Minas Gerais / Brazil

Photo by kind permission of © www.lucianabarbosa.com

Triphylite Mineral

Size of the crystal: 1.7 x 1.0 x 0.7 cm

Origin: George Smith Mine / Claremont / Sullivan County / New Hampshire / USA

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Triphylite

Size: 1.5 x 1.2 x 0.6 cm
Weight: 6.30 ct
Origin: Galileia / Minas Gerais / Brazil

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Triphylite

Weight: 0.88 ct
Size: 0.77 x 0.42 cm
Origin: Brazil

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Triphylite

Weight: 1.68 ct

Origin: Brazil

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Triphylite

Weight: 3.29 ct

Origin: Brazil

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Triphylite

Weight: 1.46 ct

Origin: Minas Gerais / Brazil

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Triphylite color change

Weight: 7.31 ct

Origin: Minas Gerais / Brazil

Photo by kind permission of © www.thegemtrader.com

Triphylite color change

Weight: 1.79 ct

Origin: Brazil

Photo by kind permission of © www.steveperrygems.com