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
GUID
(UUID V4):
(UUID V4):
7e2e71e6-5c0d-474a-8923-58507da910ac
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)
Chemical Properties of UM2005-03-AsSiO:CaCoHNi
Formula:
(Co,Ni,Ca,Mg)2SiAs2O9 · 2.5H2O
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
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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