Mottramite

Mottramiet, Mottramit, Mottramita, Моттрамит, Мотраміт, Μοττραμίτης, מוטראמיט, モットラム石, 钒铜铅矿


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


Formula: PbCu(VO4)(OH)
Mineral class: vanadates
Crystal system: orthorhombic
Mohs scale: 3 - 3.5
Density (g/cm3): 5.9
Refractive index: 2.170 - 2.320
Cleavage: -
Colors: yellow, green, brown, black
Transparency: transparent - opaque
Luster: greasy
Fluorescence: -
Pleochroism: weak - strong; X, Y: yellow, greenish yellow; Z: brownish
Largest crystal: 1 cm?
Deposits: worldwide
Discovery: 1876
1st Description: 1876 (Genth)
Name: after the type locality Mottram St. Andrew / Cheshire / England / Great Britain

Mottramite

Size: 0.6 x 0.4 x 0.3 cm
Weight: 0.47 ct
Origin: Book Cliffs / Grand Junction / Mesa County / Colorado / USA

Photo by kind permission of © www.lucianabarbosa.com

Mottramite Mineral

Size: 6.7 x 4.8 x 3.2 cm

Origin: Tsumeb / Otjikoto Region / Namibia

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

Mottramite Mineral

Size: 13.8 x 7.8 x 4.7 cm

Origin: Tsumeb / Otjikoto Region / Namibia

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

Mottramite Mineral

Image width: 0.3 cm

Origin: Borstein / Reichenbach / Odenwald Mts. / Hessen / Germany

Photo by kind permission of © Stephan Wolfsried
Mottramite Mineral

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