Ludlockite

Ludlockite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Thumbnail, 1 x .8 x .8 cm © irocks

Chemical Formula: PbFe3+4As3+10O22
Locality: In a boulder of ore found at Tsumeb, Namibia.
Name Origin: Named for mineral dealers Ludlow Smith and Locke Key, who discovered the mineral.

History

Discovery date : 1970
Town of Origin : TSUMEB
Country of Origin : NAMIBIE

Optical properties

Refractive Index: from 1,96 to 2,12

Physical Properties

Cleavage: {011} Perfect, {021} Perfect
Color:     Reddish brown.
Density: 4.37 – 4.4, Average = 4.38
Hardness: 1.5-2 – Talc-Gypsum
Luster: Subadamantine
Streak: pale brown

Photos :

Ludlockite, Philipsbornite $85.00 2.1×1.7×1.7 cm Tsumeb Namibia Copyright © David K. Joyce Minerals
Ludlockite with Leiteite and yellow unknown Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Size: 4.0 x 3.0 x 2.0 cm (miniature) © danweinrich
Ludlockite Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Miniature, 3.9 x 2.3 x 1.5 cm © irocks
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia © Paul De Bondt
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