Pale blue microcrystalline mineral forming tiny globules and thin crusts (Chiappero, 1993; Kolitsch, unpublished data). Crystals are 1-3 micron in size.
Visually similar to pale blue (Cu-bearing) crandallite-group minerals.
Classification of Unnamed (Cu-Al Arsenate) |
| IMA status: | Not Approved |
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| mindat.org URL: | http://www.mindat.org/min-39530.html
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Physical Properties of Unnamed (Cu-Al Arsenate) |
| Lustre: | Dull |
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| Colour: | Pale blue |
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Crystallography of Unnamed (Cu-Al Arsenate) |
| Morphology: | Tiny indistinct platelets (partly curved?). |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | Set 1 | | (Debye-Scherrer data): | | 7.355 | | (100) | | 5.998 | | (10-20) | | 5.642 | | (10-20) | | 4.528 | | (60-70) | | 4.308 | | (20-30) | | 3.659 | | (15-20) | | 3.450 | | (10) | | 3.153 | | (20-30) | | 3.051 | | (<10) | | 2.937 | | (10) | | 2.828 | | (20-30) | | 2.712 | | (10-20) | | 2.587 | | (<10) | | 2.501 | | (10-20) | | 2.434 | | (10-20) | | 2.349 | | (20-25) | | | ( | | Set 2 | | (Gandolfi data): | | 7.56 | | (100) | | 5.96 | | (10) | | 5.60 | | (25) | | 4.495 | | (25) | | 4.265 | | (15) | | 3.644 | | (10) | | 3.433 | | (<5) | | 3.290 | | (<10) | | 3.121 | | (10) | | 2.931 | | (5) | | 2.831 | | (10) | | 2.795 | | (10) | | 2.698 | | (20) | | 2.490 | | (20) | | 2.422 | | (10) | | 2.337 | | (10) |
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| Comments: | PXRD data of Chiappero (1993) |
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Chemical Properties of Unnamed (Cu-Al Arsenate) |
| Formula: | |
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| Essential elements: | Al, As, Cu, H, O |
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| All elements listed in formula: | Al, As, Cu, H, O |
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| Common Impurities: | Fe,Si,S |
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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. |
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References for Unnamed (Cu-Al Arsenate) |
Reference List:
- + | Chiappero, P.-J. (1993): Les arséniates de cuivre naturels: Systématique et approche des conditions de genèse par les synthèses. Applications au gisement plumbocuprifère de Cap Garonne (Var, France). - Thèse de Doctorat, Université d'Orléans, 293 pp. [phase "X2", pp. 141-144]
Kolitsch (unpubl. data, 2009) |
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Internet Links for Unnamed (Cu-Al Arsenate) |
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Localities for Unnamed (Cu-Al Arsenate) |
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