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Unnamed (Cu-S-Si-O-H)

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Big Photo

Slag dumps, Ingadanais Mines, Vila Velha de Rodão, Castelo Branco District, Portugal
© Rui Nunes 2005

Show Unnamed (Cu-S-Si-O-H) Photos (8)



Formula:
Cu-S-Si-O-H
Cu:S:Si ratio is roughly 10:1:1, and somewhat variable.
May contain very minor to trace amounts of Al, As, Fe, Cl, Mg.
Colour:Turquois to greenish blue


Anthropogenic phase found in ancient slags (Kolitsch & Brandstätter, 2012; Kolitsch, unpublished analyses).
Tiny hexagonal plates, forming rosettes or crusts. A turquoise to very pale turquoise colour (depending on crystal thickness) appears to be characteristic. The lustre is slightly pearly to glassy.
SXRD studies reveal apparent stacking disorder.

Visually similar to chalcophyllite. May be more wide-spread.

Classification of Unnamed (Cu-S-Si-O-H)

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Physical Properties of Unnamed (Cu-S-Si-O-H)

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Colour:Turquois to greenish blue

Chemical Properties of Unnamed (Cu-S-Si-O-H)

Formula:
Cu-S-Si-O-H


Cu:S:Si ratio is roughly 10:1:1, and somewhat variable.
May contain very minor to trace amounts of Al, As, Fe, Cl, Mg.
Essential elements:Cu, H, O, S, Si
All elements listed in formula:Cu, H, O, S, Si

Other Information

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

References for Unnamed (Cu-S-Si-O-H)

Reference List:

- +
Kolitsch, U. & Brandstätter, F. (2012): 1750) Anglesit, Apatit, Azurit, Fayalit, Humboldtin, Laihunit, Magnetit, Vonsenit und eine Cu-S-Si-O-H-Phase aus einer Kupferschlacke vom Lechnerberg bei Kaprun, Salzburg. Pp. 153-155 in Niedermayr, G. et al. (2012): Neue Mineralfunde aus Österreich LX. Carinthia II, 202./122., 123-180.

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    • Localities for Unnamed (Cu-S-Si-O-H)

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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Salzburg
      • Hohe Tauern
        • Kaprun valley
          • Kaprun
    		Kolitsch, U. & Brandstätter, F. (2012): 1750) Anglesit, Apatit, Azurit, Fayalit, Humboldtin, Laihunit, Magnetit, Vonsenit und eine Cu-S-Si-O-H-Phase aus einer Kupferschlacke vom Lechnerberg bei Kaprun, Salzburg. Pp. 153-155 in Niedermayr, G. et al. (2012): Neue Mineralfunde aus Österreich LXI. Carinthia II, 202./122., 123-180.
    Portugal
     
    • Castelo Branco District
      • Vila Velha de Rodão
        • Ingadanais Mines
    		SXRD-analysed by Dr. Uwe Kolitsch (to be confirmed by SEM-EDS analysis)
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