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UM1979-01-AsO:CaCu
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Formula:
Cu-Ca-As-O
"A copper arsenate, with Ca present, and minor Fe, Zn, and Sb." (Walenta, 1979). A Ca-free variety was described by Walenta (2002).
Colour:
White to pale green
As white to pale green fibrous radiating crystals, with chalcophyllite and bariumpharmacosiderite from Neubulach, Black Forest, Germany (Walenta, 1979). Distinctive PXRD pattern.
A Ca-free variety with slightly different X-ray powder pattern was later found at the famous Clara mine, Black Forest, Germany (Walenta, 2002).
A Ca-free variety with slightly different X-ray powder pattern was later found at the famous Clara mine, Black Forest, Germany (Walenta, 2002).
Unique Identifiers
Mindat ID:
47469
Long-form identifier:
mindat:1:1:47469:0
Similar Names
| UM1913-01-AsO:CaCuV | ||
| UM1983-01-As:AgCu | (Cu,Ag)2As | |
| UM1997-06-AsO:CaCuH | A synonym of OndruÅĄite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
| UM2000-56-SO:AgCu | Valid as an unnamed mineral | ~Ag26Cu4(SO3)20O17 · 3H2O |
Physical Properties of UM1979-01-AsO:CaCu
Colour:
White to pale green
Chemistry of UM1979-01-AsO:CaCu
Mindat Formula:
Cu-Ca-As-O
"A copper arsenate, with Ca present, and minor Fe, Zn, and Sb." (Walenta, 1979). A Ca-free variety was described by Walenta (2002).
"A copper arsenate, with Ca present, and minor Fe, Zn, and Sb." (Walenta, 1979). A Ca-free variety was described by Walenta (2002).
Element Weights:
Elements listed:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.26 Ã | (100) |
| 3.04 Ã | (80) |
| 2.97 Ã | (80) |
| 2.45 Ã | (90) |
| 1.608 Ã | (50) |
Comments:
Different from all Cu arsenates reported to occur at Neubulach. Low crystallinity inferred from many broad lines.
X-ray powder diffraction data of the Ca-free variety from the Clara mine, Black Forest (Walenta, 2002): 5,25 (0.5), 4.70 (8), 4.28 (10), 3.47 (0.5), 3.04 (10bb), 2.82 (0.5), 2.68 (2), 2.44 (10bb), 2.12 (0.5bb), 1.744 (0.5bb), 1.598 (4bb), 1.505 (2bb).
X-ray powder diffraction data of the Ca-free variety from the Clara mine, Black Forest (Walenta, 2002): 5,25 (0.5), 4.70 (8), 4.28 (10), 3.47 (0.5), 3.04 (10bb), 2.82 (0.5), 2.68 (2), 2.44 (10bb), 2.12 (0.5bb), 1.744 (0.5bb), 1.598 (4bb), 1.505 (2bb).
Other Information
Notes:
dissolves in cold 1:1 HNO3
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for UM1979-01-AsO:CaCu
mindat.org URL:
https://www.mindat.org/min-47469.html
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Please feel free to link to this page.
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References for UM1979-01-AsO:CaCu
Localities for UM1979-01-AsO:CaCu
Showing 2 localities.
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The Locality List
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- This locality has estimated coordinates.
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? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
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(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Germany | |
| Walenta et al. (2002) |
| Walenta (1979) +1 other reference |
