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Wollastonite-1A

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Formula:
CaSiO3
Lustre:
Vitreous
Hardness:
5
Crystal System:
Triclinic
Name:
Named after William Hyde Wollaston (1766-1828), English chemist and mineralogist who discovered palladium (1804) and rhodium (1809) and invented the reflecting goniometer (1809) and the camera lucida (1812).
A polytype of Wollastonite

Originally described from Dognecea (Dognaczka; Dognacska), Banat, Caras-Severin Co., Romania.


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Classification of Wollastonite-1AHide

9.DG.05

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
65.2.1.1a

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3

Physical Properties of Wollastonite-1AHide

Vitreous
Hardness:

Optical Data of Wollastonite-1AHide

Type:
Biaxial (-)
RI values:
nα = 1.615 - 1.646 nβ = 1.627 - 1.659 nγ = 1.629 - 1.662
2V:
Measured: 40° , Calculated: 44° to 50°
Max Birefringence:
δ = 0.014 - 0.016
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct

Chemical Properties of Wollastonite-1AHide

Formula:
CaSiO3

Crystallography of Wollastonite-1AHide

Crystal System:
Triclinic

Synonyms of Wollastonite-1AHide

Other Language Names for Wollastonite-1AHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Vesuvianite1 photo of Wollastonite-1A associated with Vesuvianite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.07CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric.
9.DG.92Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

65.2.1.1bWollastonite-2MCaSiO3Mon.
65.2.1.1cWollastoniteCaSiO3Tric. 1 : P1
65.2.1.2BustamiteCaMn2+(Si2O6)Tric. 1 : P1
65.2.1.3FerrobustamiteCaFe2+(Si2O6)Tric.
65.2.1.4aPectoliteNaCa2Si3O8(OH)Tric. 1 : P1
65.2.1.5SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
65.2.1.6CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.
65.2.1.7DenisoviteCa2(K,Na)Si3O8(F,OH)2Mon.

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 Wollastonite-1AHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Inst. Geol. (1818) 3, 198
Mineral. J. (1973) 7, 180

Internet Links for Wollastonite-1AHide

Localities for Wollastonite-1AHide

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.
Italy
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
www.dinet.it/Mineral-GMC/AMI/vesuvio.html.
Mexico
 
  • Chihuahua
    • Pueblito de Allende
www.lpi.usra.edu/meetings/metsoc2002/pdf/5053.pdf.
Romania
 
  • Caraş-Severin Co.
    • Banat Mts
      • Ocna de Fier-Dognecea District
Klaproth, M.H. (1802): Chemische Untersuchung des Tafelspaths, Beiträge zur chemischen Kenntniss der Mineralkörper, Dritter Band, Rottmann Berlin, 289-291
USA
 
  • Alaska
    • Prince of Wales-Outer Ketchikan Borough
      • Ketchikan District
PXRD by John Attard (Attard XRD Services, San Diego).
  • California
    • Imperial Co.
      • Jacumba Mts
        • Jacumba District
University of Arizona Mineral Museum 12446
    • Riverside Co.
      • Crestmore
[micromounts@yahoogroups.com]
Mineral and/or Locality  
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