Cerchiaraite-(Mn) (original) (raw)
A valid IMA mineral species
About Cerchiaraite-(Mn)Hide
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Formula:
Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Crystal System:
Tetragonal
Name:
Named cerchiaraite by Basso et al. in 2000, for the type locality of Cerchiara mine, Italy. It was renamed with a suffix by Kampf et al. in 2013 following the discovery of the Fe and Al analogues. The suffix is for the dominant trivalent M cation.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:7081:8
73751980-0f32-4220-abbf-ca1a0f1e74d6
IMA Classification of Cerchiaraite-(Mn)Hide
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Type description reference:
Classification of Cerchiaraite-(Mn)Hide
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9.CF.25
9 : SILICATES (Germanates)
C : Cyclosilicates
F : [Si4O12]8- 4-membered single rings, with insular complex anions
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Ccr-Mn | 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 Cerchiaraite-(Mn)Hide
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Hardness:
VHN50=296 kg/mm2 - Vickers
Cleavage:
None Observed
None
Fracture:
Irregular/Uneven
Density:
3.62 g/cm3 (Measured) 3.70 g/cm3 (Calculated)
Optical Data of Cerchiaraite-(Mn)Hide
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RI values:
_n_ω = 1.745(5) _n_ε = 1.765(5)
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of Cerchiaraite-(Mn)Hide
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Mindat Formula:
Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Crystallography of Cerchiaraite-(Mn)Hide
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Crystal System:
Tetragonal
Class (H-M):
4/m m m _(_4/_m_2/_m_2/m ) - Ditetragonal Dipyramidal
Cell Parameters:
a = 14.223(16) Å, c = 6.141(4) Å
Unit Cell V:
1,242.29 ų (Calculated from Unit Cell)
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014905 | Cerchiaraite-(Mn) | Basso R, Lucchetti G, Zefiro L, Palenzona A (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy Neues Jahrbuch fur Mineralogie, Monatshefte 2000 373-384 | 2000 | Cerchiara mine, Va di Vara, northern Apennines, Italy | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.15 Å | (88) |
| 4.417 Å | (49) |
| 3.319 Å | (75) |
| 3.01 Å | (100) |
| 2.619 Å | (74) |
| 2.577 Å | (62) |
Geological EnvironmentHide
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Type Occurrence of Cerchiaraite-(Mn)Hide
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General Appearance of Type Material:
grains and radial aggregates
Place of Conservation of Type Material:
Dipartimento per Studio del Territorio e delle sue Risorse, Università di Genova, Italy.
Associated Minerals at Type Locality:
Reference:
Basso, R., Lucchetti, G., Zefiro, L., Palenzona, A. (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy. Neues Jahrbuch für Mineralogie, Monatshefte: 373-384.
Synonyms of Cerchiaraite-(Mn)Hide
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Other Language Names for Cerchiaraite-(Mn)Hide
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Relationship of Cerchiaraite-(Mn) to other SpeciesHide
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Other Members of this group:
| Cerchiaraite-(Al) | Ba4Al4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m m m |
|---|---|---|
| Cerchiaraite-(Fe) | Ba4Fe3+4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m m m |
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.CF. | Bobmeyerite | Pb4(Al3Cu)(Si4O12)(S0.5Si0.5O4)(OH)7Cl(H2O)3 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
|---|---|---|---|
| 9.CF.05 | Ashburtonite | Pb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2O | Tet. |
| 9.CF.10 | Kainosite-(Y) | Ca2(Y,Ce)2(Si4O12)(CO3) · H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.CF.15 | Clinophosinaite | Na12(Ca,Sr)4(Si4O12)(PO4)4 | Mon. 2/m : _P_2/b |
| 9.CF.15 | Phosinaite-(Ce) | Na13Ca2(Ce,La,Th,Nd,Pr)(Si4O12)(PO4)4 | Orth. 222 : _P_21212 |
| 9.CF.20 | Strakhovite | NaBa3Mn2+2Mn3+2Si6O19(OH)3 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.CF.25 | Cerchiaraite-(Al) | Ba4Al4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m m m |
| 9.CF.25 | Cerchiaraite-(Fe) | Ba4Fe3+4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_4/m m m |
Other InformationHide
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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 Cerchiaraite-(Mn)Hide
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References for Cerchiaraite-(Mn)Hide
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Reference List:
Kampf, A. R., Roberts, A. C., Venance, K. E., Carbone, C., Belmonte, D., Dunning, G. E., Walstrom, R. E. (2013) Cerchiaraite-(Fe) and cerchiaraite-(Al), two new barium cyclosilicate chlorides from Italy and California, USA. Mineralogical Magazine, 77 (1) 69-80 doi:10.1180/minmag.2013.077.1.07
Localities for Cerchiaraite-(Mn)Hide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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.
| Australia | |
|---|---|
| New South Wales Inglis Co. ⓘ Woods Mine (Wood's Rhodonite Mine) | Coombs et al. (2004) |
| Italy (TL) | |
| Liguria La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine (TL) |
Basso et al. (2000) +2 other references |