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
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
Image width: 0.3 cm Origin: Borstein / Reichenbach / Odenwald Mts. / Hessen / Germany Photo by kind permission of © Stephan Wolfsried |