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Calciopetersite
A valid IMA mineral species
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About Calciopetersite
Formula:
CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O
Colour:
Olive green
Lustre:
Vitreous
Specific Gravity:
3.332 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
For the chemical composition and its relationship with petersite.
Unique Identifiers
Mindat ID:
28884
Long-form identifier:
mindat:1:1:28884:4
IMA Classification of Calciopetersite
Approved
IMA Formula:
Cu2+6Ca(PO4)2(PO3OH)(OH)6·3H2O
Approval year:
2001
First published:
2005
Classification of Calciopetersite
8.DL.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Cpts | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Calciopetersite
Vitreous
Colour:
Olive green
Streak:
Light olive green
Comment:
"soft"
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.332 g/cm3 (Calculated)
Optical Data of Calciopetersite
Type:
Uniaxial (+)
RI values:
nω = 1.674 nε = 1.75
Max. Birefringence:
δ = 0.076
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Comments:
O light green with yellowish tint, E green
Chemistry of Calciopetersite
Mindat Formula:
CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O
Element Weights:
Crystallography of Calciopetersite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 13.284 Å, c = 5.902 Å
Ratio:
a:c = 1 : 0.444
Unit Cell V:
902 ų
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.51 Å | (100) |
| 4.346 Å | (88) |
| 4.140 Å | (46) |
| 3.837 Å | (38) |
| 3.321 Å | (44) |
| 2.888 Å | (53) |
| 2.877 Å | (37) |
| 2.510 Å | (37) |
Reference:
Comments:
Format: d/Å I/% (hkl)
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Calciopetersite
General Appearance of Type Material:
Minute acicular crystals with a hexagonal outline, up to 0.4 mm in length and 5–20 µm in width, clustered in fine radiating sprays up to 0.1 × 0.5 mm in size.
Place of Conservation of Type Material:
Natural History Museum, National Museum, Prague, Czech Republic (P1p-20/2000).
Geological Setting of Type Material:
Cavities in weathered, copper sulphide bearing quartz veins.
Associated Minerals at Type Locality:
Synonyms of Calciopetersite
Other Language Names for Calciopetersite
Relationship of Calciopetersite to other Species
Member of:
Other Members of Mixite Group:
| Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O | Hex. |
| Mixite | BiCu6(AsO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(Ce) | CeCu6(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(La) | LaCu6(PO4)3(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Petersite-(Y) | YCu6(PO4)3(OH)6 · 3H2O | Hex. |
| Plumboagardite | PbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
| Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O | Hex. 6/m : P63/m |
Common Associates
Associations Based on Photo Data:
| 12 photos of Calciopetersite associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| 1 photo of Calciopetersite associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 8.DL.05 | Foggite | CaAl(PO4)(OH)2 · H2O |
| 8.DL.10 | Fluorowardite | NaAl3(PO4)2F2(OH)2(H2O)2 |
| 8.DL.10 | Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| 8.DL.10 | Millisite | (Na,K)CaAl6(PO4)4(OH)9 · 3H2O |
| 8.DL.10 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
| 8.DL.15 | Petersite-(Ce) | CeCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | 'Agardite-(Dy)' | (Dy,La)Cu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(Y) | YCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(La) | LaCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Plumboagardite | PbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.20 | Dugganite | Pb3Zn3(AsO4)2(TeO6) |
| 8.DL.20 | Wallkilldellite | Ca2Mn2+3(AsO4)2(OH)4 · 9H2O |
| 8.DL.20 | Wallkilldellite-(Fe) | (Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O |
| 8.DL.20 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) |
| 8.DL.20 | Kuksite | Pb3Zn3(PO4)2(TeO6) |
| 8.DL.25 | Angastonite | CaMgAl2(PO4)2(OH)4 · 7H2O |
| 8.DL.30 | Långbanshyttanite | Pb2Mn2Mg(AsO4)2(OH)4 · 6H2O |
Fluorescence of Calciopetersite
none
Other Information
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 Calciopetersite
mindat.org URL:
https://www.mindat.org/min-28884.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Calciopetersite
Reference List:
Sejkora, J., Novotný, P., Novák, M., Šrein, V., Berlepsch, P. (2005) Calciopetersite from Domašov Nad Bystricí, northern Moravia, Czech Republic, a new mineral species of the mixite group. The Canadian Mineralogist, 43 (4) 1393-1400 doi:10.2113/gscanmin.43.4.1393
Locock, A. J., Piilonen, P. C., Ercit, T. S., Rowe, R., Kolitsch, U. (2006) New mineral names. American Mineralogist, 91 (4) 710-715 doi:10.2138/am.2006.463
Čejka, Jiří, Sejkora, Jiří, Plášil, Jakub, Keeffe, Eloise C., Bahfenne, Silmarilly, Palmer, Sara J., Frost, Ray L. (2011) A Raman and infrared spectroscopic study of Ca2+dominant members of the mixite group from the Czech Republic. Journal of Raman Spectroscopy, 42 (5). 1154-1159 doi:10.1002/jrs.2817
Localities for Calciopetersite
Showing 3 localities.
symbol to view information about a locality.
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.
Czech Republic (TL) | |
| Sejkora et al. (2005) +1 other reference |
Germany | |
| Kolitsch (1997) |
Italy | |
| Biagioni et al. (2011) +1 other reference |
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Domašov nad Bystřicí quarry, Domašov nad Bystřicí, Olomouc District, Olomouc Region, Czech Republic