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Cuprian Glauconite

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Formula:
(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Crystal System:
Monoclinic
A variety of Glauconite

A 2M polytype mica, glauconite variety, containing up to 2.02 wt.% CuO and anomalously rich in Na2O (over 6 wt.%) and MgO (over 7 wt.%), by up to 1.13 wt.% FeO.

A common constituent of white sandstones (Weissliegendes) with chalcocite mineralization within the Zechstein Cu deposits of Fore-Sudetic Monocline, Poland. Likely a product of an interaction of ordinary glauconite with Mg,K-bearing brine being at once parental to the Cu mineralization.


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Chemical Properties of Cuprian GlauconiteHide

Formula:
(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2

Crystallography of Cuprian GlauconiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 5.19 Å, b = 9.00 Å, c = 19.99 Å
β = 95.48°
Ratio:
a:b:c = 0.577 : 1 : 2.221
Unit Cell V:
929.47 ų (Calculated from Unit Cell)

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Cuprian GlauconiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kucha, H., Piestrzyński, A., Wieczorek, A. (1982): Copper-bearing glauconite from the Weissliegendes of Zechstein copper deposits, Poland. Mineralogia - Special Papers: 13(2): 21-27

Internet Links for Cuprian GlauconiteHide

Localities for Cuprian GlauconiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Poland
 
  • Lower Silesian Voivodeship
Kucha, H., Piestrzyński, A., Wieczorek, A. (1982): Copper-bearing glauconite from the Weissliegendes of Zechstein copper deposits, Poland. Mineralogia - Special Papers: 13(2): 21-27
 
Mineral and/or Locality  
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