UM2005-03-AsSiO:CaCoHNi
Valid as an unnamed mineral
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Formula:
(Co,Ni,Ca,Mg)2SiAs2O9 · 2.5H2O
Colour:
colourless to pinkish
Hardness:
1 - 2
Specific Gravity:
3.26 (Calculated)
Crystal System:
Orthorhombic
Unique combination of elements.
With erythrite, baryte, and quartz, in an altered granite.
As hair-like curved crystals (up to 1.2 mm long and up to 0.02 mm wide) forming loose efflorescences on erythrite.
EPMA data [wt.%, water by difference; 11 oxygen atoms basis for the empirical formula]:
MgO 1.21
CaO 5.19
CoO 16.51
NiO 6.10
MnO 0.95
As2O5 46.98
SiO2 13.91
H2O 9.15
total 100.00
This corresponds to Mg0.14Ca0.42Co1.00Ni0.37Mn0.06As1.85Si1.05H4.60O11.
With erythrite, baryte, and quartz, in an altered granite.
As hair-like curved crystals (up to 1.2 mm long and up to 0.02 mm wide) forming loose efflorescences on erythrite.
EPMA data [wt.%, water by difference; 11 oxygen atoms basis for the empirical formula]:
MgO 1.21
CaO 5.19
CoO 16.51
NiO 6.10
MnO 0.95
As2O5 46.98
SiO2 13.91
H2O 9.15
total 100.00
This corresponds to Mg0.14Ca0.42Co1.00Ni0.37Mn0.06As1.85Si1.05H4.60O11.
Unique Identifiers
Mindat ID:
54507
Long-form identifier:
mindat:1:1:54507:7
IMA Classification of UM2005-03-AsSiO:CaCoHNi
IMA status notes:
Unnamed (probably valid)
Physical Properties of UM2005-03-AsSiO:CaCoHNi
Colour:
Colourless to pinkish
Hardness:
1 - 2 on Mohs scale
Comment:
est.
Tenacity:
Flexible
Cleavage:
None Observed
Density:
3.26 g/cm3 (Calculated)
Chemistry of UM2005-03-AsSiO:CaCoHNi
Mindat Formula:
(Co,Ni,Ca,Mg)2SiAs2O9 · 2.5H2O
Element Weights:
Crystallography of UM2005-03-AsSiO:CaCoHNi
Crystal System:
Orthorhombic
Comment:
probably
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.39 Å | (10) |
| 7.21 Å | (8; very diffuse) |
| 3.27 Å | (6) |
| 3.09 Å | (6) |
| 2.87 Å | (8) |
| 1.975 Å | (0.5) |
| 1.652 Å | (4) |
| 1.495 Å | (0.5) |
Comments:
low crystallinity is likely
Other Information
Notes:
quickly dissolves in 1:1 HCl
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 UM2005-03-AsSiO:CaCoHNi
mindat.org URL:
https://www.mindat.org/min-54507.html
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References for UM2005-03-AsSiO:CaCoHNi
Reference List:
Localities for UM2005-03-AsSiO:CaCoHNi
Showing 1 localities.
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Germany | |
| Walenta et al. (2005) +1 other reference |
