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Mineralpedia Details for Nadorite

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Nadorite

Nadorite

Named for the original and type occurrence at Djebel Nador in the Constantine Province of Algeria. A rare mineral, Nadorite can be found in additional localities that include Morocco, England, Sweden, Germany, Bulgaria, Kazakhstan, and Namibia. It occurs “as an alteration product of other antimony-bearing minerals in hydrothermal mineral deposits.”

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/nadorite.pdf

Formula
PbSb3+O2Cl 
Crystal System
Orthorhombic 
Cleavage
Perfect, None, None 
Luster
Adamantine - Resinous 
Color
brown, brownish yellow, grayish brown, yellow 
Streak
yellow white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
3.5-4 
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Nadorite from Långban, Filipstad, Värmland, Sweden

Nadorite
            from Långban, Filipstad, Värmland, Sweden

Honey yellow crystals to 1mm.

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Nadorite from Djebel Debar, Constantine, Algeria

Nadorite
            from Djebel Debar, Constantine, Algeria

Suberb crystal plates of amber brown Nadorite to 3mm in open vug with colorless to white bladed crystals of Valentinite.

Click thumbnail images for larger view.

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