Epidote

Epidoot, Epidootti, Epidot, Epidota, Epidotas, Épidote, Epidoto, Епідот, 緑簾石, 紅綠寶石, אפידוט


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


Formula: Ca2(Fe3+,Al)3(SiO4)3(OH)
Mineral class: silicates
Crystal system: monoclinic
Mohs scale: 6 - 7
Density (g/cm3): 3.39 - 3.49
Refractive index: 1.715 - 1.797
Cleavage: different
Colors: yellow-green, dark green; reddish-brown, gold-brown
Luster: vitreous - resinous
Fluorescence: -
Pleochroism: strong: colorless - yellow - green - brown
Largest Epidote: 0.419 kg (source: www.mineralien-basel.ch), 35 cm?
Deposits: worldwide
1st Description: 1892
Name: from the Greek word "epidosis" (increase)

Epidote Mineral

Size: 2.8 x 2.5 x 1 cm

Origin: Bellecombe / Aosta Valley / Italy

Photo by kind permission of © www.webmineralshop.com
Epidote Mineral

Epidote Mineral

Origin: Pakistan

Photo by kind permission of © www.mineraltivadar.hu
Epidote Mineral
Epidote

Weight: 0.53 ct

Origin: Pakistan

Photo by kind permission of © www.americanthai.com

Epidote

Weight: 0.89 ct
Size: 0.69 x 0.55 cm
Origin: Brazil

Photo by kind permission of © www.gemfrance.com

Epidote

Weight: 0.35 ct

Origin: Austria

Photo by kind permission of © www.irocks.com

Epidote Mineral

Origin: Lago Fallin / Val di Viu / Piemonte / Italy

Photo by kind permission of © www.irocks.com
Epidote Mineral
Epidote

Weight: 0.55 ct

Origin: Pakistan

Photo by kind permission of © www.americanthai.com

Epidote

Weight: 3.07 ct

Origin: Bahia / Brazil

Photo by kind permission of © www.irocks.com

Formula Tawmawite (Chrome Epidote): Ca2(Al,Fe3+,Cr)3[O/OH/SiO4/Si2O7]
Mineral class: silicates
Crystal system: monoclinic
Mohs scale: 6 - 7
Density (g/cm3): 3.45 ?
Refractive index: 1.715 - 1.797 ?
Colors: yellow, green, dark green
Fluorescence: -
Pleochroism: strong: green - light yellow
Largest Tawmawite: ?
Deposits: Austria, Finland, Italy, Myanmar, Pakistan, USA, Zimbabwe
1st Description: 1907 (Bleeck)
Tawmawite

Size: 4.1 x 4.1 x 2.2 cm
Weight: 0.30 ct
Origin: Pakistan

Photo by kind permission of © www.djraregems.com

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