Andalusite

Andalousita, Andalousite, Andalucita, Andalusiet, Andalusiit, Andalusita, Andalusite, Andalúzit, Andaluzita, Andalūzitas, Andaluzite, Andaluzito, Andaluzyt, Андалузит, 紅柱石, אנדלוזיט


Commonly known      rarer (so called collectors stones)      very rare (rarities)      relatively rare organic material


Formula: Al[AlSiO5]
Mineral class: silicates
Crystal system: rhombic
Mohs scale: 7.5
Density (g/cm3): 3.12 - 3.18
Refractive index: 1.627 - 1.649
Cleavage: different
Colors: yellowish, green, grey-brown, red-brown
Luster: vitreous - subvitreous
Fluorescence: slight green
Pleochroism: strong: yellow - olive - reddish
Largest Andalusite: 25 cm?
Deposits: Brazil, Sri Lanka, Canada, Spain, Russia, USA
1st Description: 1892
Name: after its first discovered deposit in Andalusia / Spain

Andalusite Mineral

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Andalusite Mineral
Andalusite

Weight: 0.65 ct

Origin: Bahia / Brazil

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Andalusite

Weight: 0.99 ct

Origin: Tunduru / Tanzania

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Andalusite Ring

Andalusite: 6.08 ct; 1.27 x 1.08 x 0.63 cm; Brazil
Diamonds: 84; total 0.76 ct
Gold: 18K White gold

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Andalusite Ring

Andalusite

Weight: 2.15 ct

Origin: Brazil

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Andalusite Mineral

Size: 2.0 x 1.6 x 1.3 cm

Origin: Itinga / Minas Gerais / Brazil

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Andalusite Mineral
Andalusite

Weight: 1.46 ct

Origin: Brazil

Photo by kind permission of © www.multicolour.com

Andalusite Mineral

Size: 1.4 x 0.3 x 0.2 cm

Origin: Espirito Santo / Brazil

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Andalusite Mineral

Andalusite Mineral

Origin: Minas Gerais / Brazil

Photo by kind permission of © Alan Guisewite
Andalusite Mineral
Andalusite

Size: 0.89 x 0.84 x 0.48 cm
Weight: 2.28 ct
Origin: Brazil

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Andalusite Ring

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Andalusite

Weight: 2.09 ct

Origin: Brazil

Photo by kind permission of © www.multicolour.com

Andalusite

Size: 1.9 x 1.1 x 0.7 cm

Weight: 17.4 ct

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Andalusite

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Andalusite

Weight: 2.50 ct

Origin: North Slope / Alaska / USA

Photo by kind permission of © www.rocklogic.biz

Andalusite Var. Chiastolite Mineral

Size: 2.2 x 2.2 x 0.3 cm

Origin: Hunan Prov. / China

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Andalusite Mineral
Andalusite Var. Chiastolite Sphere

Size: 2 cm

Origin: Hunan Prov. / China

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Andalusite Var. Chiastolite Mineral

Origin: China

Photo by kind permission of © www.theimage.com
Andalusite Mineral
Andalusite Var. Chiastolite Mineral Pendant

Material: Silver

Photo by kind permission of © www.wolfpiontek.de
Andalusite Mineral


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