Powellite

Powelliet, Powellit, Powellita, Повеллит, 鉬鈣礦


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


Formula: Ca[MoO4]
Mineral class: molybdates
Crystal system: teragonal
Mohs scale: 3.5 - 4
Density (g/cm3): 4.26
Refractive index: 1.974 - 1.984
Cleavage: indistinct
Colors: colorless, white, yellowish, brown, green
Transparency: transparent - translucent
Luster: different
Fluorescence: SW UV: yellow
Pleochroism: blue - green
Largest crystal: 8 cm?
Deposits: worldwide
Discovery: 1891
1st Description: 1891 (Melville)
Name: in honor of the American geologist John Wesley Powell (1834 - 1902)

Powellite

Weight: 5.09 ct

Origin: Nasik / Maharashtra Distr. / India

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Powellite on Stilbite (beige)

Size of the crystal: 3 cm

Origin: Jalgaon / Maharashtra Distr. / India

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Powellite Mineral
Powellite

Weight: 1.88 ct

Origin: Jalgaon / Maharashtra Distr. / India

Photo by kind permission of © www.thegemtrader.com

Powellite Mineral

Size: 3.5 x 3.0 x 2.5 cm

Origin: Jalgaon / Maharashtra Distr. / India

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Powellite Mineral
Powellite

Weight: 1.26 ct

Origin: Jalgaon / Maharashtra Distr. / India

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Powellite Mineral

Size: 3.3 x 2.0 x 2.0 cm

Origin: Jalgaon / Maharashtra Distr. / India

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Powellite Mineral

Powellite on Apophyllite

Size: 9.4 x 8.8 x 5.6 cm

Origin: Jalgaon / Maharashtra Distr. / India

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Powellite Mineral

Powellite (Cu) Mineral SW UV Light

Size: 5.5 x 3.5 x 3.5 cm

Origin: Jardinera #1 Mine / Inca de Oro / Atacama / Chile

Photo by kind permission of © www.kqminerals.com
Powellite Mineral
Powellite (Cu)

Weight: 0.41 ct

Origin: Jardinera #1 Mine / Inca de Oro / Atacama / Chile

Photo by kind permission of © www.steveperrygems.com

Powellite (Cu) Mineral

Size: 2.5 x 1.5 x 1.5 cm

Origin: Nasik / Maharashtra Distr. / India

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Powellite Mineral
Powellite (Cu)

Weight: 0.16 ct

Origin: Inca de Oro / Chañaral Prov. / Atacama / Chile

Photo by kind permission of © www.steveperrygems.com

Powellite (Cu) Mineral

Size: 4.0 x 3.5 x 3.0 cm

Origin: Jardinera No. 1 Mine / Inca de Oro / Chañaral Prov. / Atacama / Chile

Photo by kind permission of © www.irocks.com
Powellite Mineral
Powellite (Cu)

Size: 0.72 cm
Weight: 1.93 ct
Origin: Jardinera No. 1 Mine / Inca de Oro / Chañaral Prov. / Atacama / Chile

Photo by kind permission of © www.steveperrygems.com

Powellite (Cu) Mineral

Size: 6.5 x 5.3 x 3.9 cm

Origin: Jardinera No. 1 Mine / Inca de Oro / Chañaral Prov. / Atacama / Chile

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

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