Montebrasite

Formula: LiAl(PO₄)(OH,F)
Mineral class: phosphates
Crystal system: triclinic
Mohs scale: 5.5 - 6
Density (g/cm³): 2.98 - 3.04
Refractive index: 1.57 - 1.62
Cleavage: different
Colors: colorless, yellowish, grey, blueish, greenish
Luster: vitreous
Fluorescence: -
Pleochroism: -
Largest Montebrasite: 10 cm (Chappu / Braldu Valley / Baltistan / Pakistan)
Deposits: worldwide
Discovery: 1871
1st Description: 1951
Name: from the type locality Montebras Mine / Montebras-en-Soumans / Limousin / France

Montebrasite

Weight: 2.09 ct

Origin: Brazil

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Montebrasite Mineral

Size: 1.3 x 1.2 x 0.8 cm

Origin: Linópolis / Minas Gerais / Brazil

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Montebrasite

Weight: 1.68 ct

Origin: Minas Gerais / Brazil

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Montebrasite Mineral

Size: 1.9 x 1.7 x 1.0 cm

Origin: Telirio Mine / Linópolis / Minas Gerais / Brazil

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Montebrasite

Size: 1.5 x 1.3 x 0.8 cm
Weight: 13.10 ct
Origin: Linópolis / Minas Gerais / Brazil

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Montebrasite

Size: 1.27 x 0.79 cm
Weight: 3.43 ct
Origin: Brazil

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Montebrasite Mineral

Size: 2.0 x 1.7 x 1.0 cm
Weight: 28 ct
Origin: Divino das Laranjeiras / Vale do Rio Doce / Minas Gerais / Brazil

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Montebrasite Mineral with yellow Kosnarite

Origin: Itinga / Minas Gerais / Brazil

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Montebrasite bicolor

Size: 1.1 x 0.9 x 0.7 cm
Weight: 6.10 ct
Origin: Linópolis / Minas Gerais / Brazil

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