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Cerchiaraite-(Mn)

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About Cerchiaraite-(Mn)Hide

Formula:
Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
Colour:
Deep green
Lustre:
Vitreous
Hardness:
4 - 5
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.
The Mn analogue of cerchiaraite-(Al) and cerchiaraite-(Fe). Related to bobmeyerite and ashburtonite.


Classification of Cerchiaraite-(Mn)Hide

Approved
First Published:
2000
9.CF.25

9 : SILICATES (Germanates)
C : Cyclosilicates
F : [Si4O12]8- 4-membered single rings, with insular complex anions

Physical Properties of Cerchiaraite-(Mn)Hide

Vitreous
Colour:
Deep green
Streak:
Pale green
Hardness:
4 - 5 on Mohs scale

Optical Data of Cerchiaraite-(Mn)Hide

Type:
Uniaxial (+)
RI values:
nω = 1.745 nε = 1.765
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of Cerchiaraite-(Mn)Hide

Formula:
Ba4Mn3+4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]
IMA Formula:
Ba4Mn4(Si4O12)O2(OH)4Cl2[Si2O3(OH)4]

Crystallography of Cerchiaraite-(Mn)Hide

Crystal System:
Tetragonal

Type Occurrence of Cerchiaraite-(Mn)Hide

Place of Conservation of Type Material:
Dipartimento per Studio del Territorio e delle sue Risorse, Università di Genova, Italy.
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

Other Language Names for Cerchiaraite-(Mn)Hide

Relationship of Cerchiaraite-(Mn) to other SpeciesHide

Other Members of this group:
Cerchiaraite-(Al)Ba4Al4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
Cerchiaraite-(Fe)Ba4Fe3+4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm

Common AssociatesHide

Associated Minerals Based on Photo Data:
Namansilite1 photo of Cerchiaraite-(Mn) associated with Namansilite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.CF.05AshburtonitePb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2OTet.
9.CF.10Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2OOrth. mmm (2/m 2/m 2/m)
9.CF.15ClinophosinaiteNa12(Ca,Sr)4(Si4O12)(PO4)4Mon.
9.CF.15Phosinaite-(Ce)Na13Ca2(Ce,La,Th,Nd,Pr)(Si4O12)(PO4)4Orth.
9.CF.20StrakhoviteNaBa3Mn2+2Mn3+2Si6O19(OH)3Orth.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Cerchiaraite-(Mn)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Jambor, J.L., Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.
Palenzona, A., Bulgarelli, G., Selmi, P. (2001) La cerchiaraite della miniera di Cerchiara. Rivista Mineralogica Italiana: 243-244.
Coombs, D.S., Kawachi, Y., Miura, H., Chapell, D. (2004) Cerchiaraite and Ca-bearing noélbensonite from Woods mine, New South Wales, Australia. European Journal of Mineralogy: 16: 185-189.
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: 69-80.

Internet Links for Cerchiaraite-(Mn)Hide

Localities for Cerchiaraite-(Mn)Hide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Darling Co.
      • Tamworth
Coombs, D.S., Kawachi, Y., Miura, H., Chapell, D. (2004): Cerchiaraite and Ca-bearing noélbensonite from Woods mine, New South Wales, Australia. European Journal of Mineralogy, 16, 185-189.
Italy (TL)
 
  • Liguria
    • La Spezia Province
      • Vara Valley
        • Borghetto Vara
Basso, R., Lucchetti, G., Zefiro, L., and 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.; Jambor, J.L. and Roberts, A.C. (2001) New mineral names. American Mineralogist: 86: 197-200.; Palenzona, A., Bulgarelli, G., and Selmi, P. (2001) La cerchiaraite della miniera di Cerchiara. Rivista Mineralogica Italiana: 243-244.
Mineral and/or Locality  
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