Wollastonite-1A
A structural variant of Wollastonite
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About Wollastonite-1A
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.
Originally described from Dognecea (Dognaczka; Dognacska), Banat, Caras-Severin Co., Romania.
Unique Identifiers
Mindat ID:
7369
Long-form identifier:
mindat:1:1:7369:7
GUID
(UUID V4):
(UUID V4):
df7c75a2-730d-41b1-9bbf-ed621daefa13
Classification of Wollastonite-1A
9.DG.05
9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
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
65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3
Physical Properties of Wollastonite-1A
Vitreous
Hardness:
5 on Mohs scale
Optical Data of Wollastonite-1A
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct
Chemical Properties of Wollastonite-1A
Formula:
CaSiO3
Elements listed:
Crystallography of Wollastonite-1A
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.94 Å, b = 7.32 Å, c = 7.07 Å
α = 90.03°, β = 95.37°, γ = 103.43°
α = 90.03°, β = 95.37°, γ = 103.43°
Ratio:
a:b:c = 1.085 : 1 : 0.966
Unit Cell V:
397.82 ų (Calculated from Unit Cell)
Z:
6
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.314 Å | (100) |
3.83 Å | (84) |
3.51 Å | (77) |
3.086 Å | (58) |
2.302 Å | (52) |
2.556 Å | (44) |
1.759 Å | (35) |
Synonyms of Wollastonite-1A
Other Language Names for Wollastonite-1A
German:Wollastonit-1A
Russian:Волластонит-1T
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Wollastonite-1A associated with Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
Related Minerals - Strunz-mindat Grouping
9.DG. | Calcinaksite | KNaCa(Si4O10) · H2O | Tric. 1 : P1 |
9.DG. | Barrydawsonite-(Y) | Na1.5Y0.5CaSi3O8(OH) | Mon. 2/m : P21/b |
9.DG. | Paratobermorite | Ca4(Al0.5Si0.5)2Si4O16(OH)(H2O)2 · (Ca · 3H2O) | Mon. 2/m |
9.DG.02 | Steedeite | NaMn2[Si3BO9](OH)2 | Tric. 1 : P1 |
9.DG.02 | Nolzeite | NaMn2[Si3BO9](OH)2 · 2H2O | Tric. 1 : P1 |
9.DG.05 | Bustamite | CaMn2+(Si2O6) | Tric. 1 : P1 |
9.DG.05 | Ferrobustamite | CaFe2+(Si2O6) | Tric. 1 |
9.DG.05 | Pectolite | NaCa2Si3O8(OH) | Tric. 1 : P1 |
9.DG.05 | Serandite | NaMn2+2Si3O8(OH) | Tric. 1 : P1 |
9.DG.05 | Wollastonite | Ca3(Si3O9) | Tric. 1 : P1 |
9.DG.05 | Tanohataite | LiMn2Si3O8(OH) | Tric. 1 : P1 |
9.DG.05 | Schizolite | NaCaMnSi3O8(OH) | Tric. 1 : P1 |
9.DG.05 | Murakamiite | LiCa2Si3O8(OH) | Tric. 1 : P1 |
9.DG.05 | Dalnegorskite | Ca5Mn(Si3O9)2 | Tric. 1 : P1 |
9.DG.07 | Cascandite | CaScSi3O8(OH) | Tric. 1 |
9.DG.08 | Plombièrite | [Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O) | Orth. |
9.DG.10 | Clinotobermorite | [Ca4Si6O17 · 2H2O] · (Ca · 3H2O) | Mon. |
9.DG.10 | Riversideite | Ca5(HSi3O9)2 · 2H2O | Orth. |
9.DG.10 | Tobermorite | Ca4Si6O17(H2O)2 · (Ca · 3H2O) | Mon. 2 : P21 |
9.DG.12 | Jusite | Na2Ca15Al4Si16O54 · 17H2O | |
9.DG.12 | Kenotobermorite | Ca4Si6O15(OH)2(H2O)2 · 3H2O | Mon. |
9.DG.15 | Foshagite | Ca4(Si3O9)(OH)2 | Tric. 1 : P1 |
9.DG.20 | Jennite | Ca9(Si3O9)2(OH)8 · 8H2O | Tric. 1 : P1 |
9.DG.20 | Kamenevite | K2TiSi3O9 · H2O | Orth. 2 2 2 : P21 21 21 |
9.DG.25 | Paraumbite | K3Zr2H(Si3O9)2 · nH2O | Orth. mm2 |
9.DG.25 | Umbite | K2(Zr,Ti)Si3O9 · H2O | Orth. 2 2 2 : P21 21 21 |
9.DG.30 | Sørensenite | Na4SnBe2Si6O16(OH)4 | Mon. 2/m : B2/b |
9.DG.32 | Escheite | Ca2NaMnTi5[Si12O34]O2(OH)3 · 12H2O | Orth. mm2 : Ama2 |
9.DG.35 | Xonotlite | Ca6(Si6O17)(OH)2 | Mon. 2/m : B2/m |
9.DG.40 | Hillebrandite | Ca2(SiO3)(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cmcm |
9.DG.45 | Zorite | Na8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2O | Orth. |
9.DG.45 | Chivruaiite | Ca4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2O | Orth. mmm (2/m 2/m 2/m) : Cmmm |
9.DG.50 | Haineaultite | (Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2O | Orth. 2 2 2 : C2 2 2 |
9.DG.55 | Epididymite | Na2Be2Si6O15 · H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
9.DG.60 | Eudidymite | Na2Be2Si6O15 · H2O | Mon. 2/m : B2/b |
9.DG.65 | Elpidite | Na2ZrSi6O15 · 3H2O | Orth. |
9.DG.65 | Patynite | NaKCa4[Si9O23] | Tric. 1 : P1 |
9.DG.67 | Whelanite | Cu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2O | Orth. mm2 : Pnn2 |
9.DG.70 | Fenaksite | (K,Na)4(Fe,Mn)2(Si4O10)2(OH,F) | Tric. 1 : P1 |
9.DG.70 | Litidionite | CuNaKSi4O10 | Tric. 1 : P1 |
9.DG.70 | Manaksite | KNaMnSi4O10 | Tric. 1 : P1 |
9.DG.70 | Yusupovite | Na2Zr(Si6O15) · 2.5H2O | Mon. 2/m : B2/m |
9.DG.75 | Tinaksite | K2Na(Ca,Mn2+)2TiO[Si7O18(OH)] | Tric. |
9.DG.75 | Tokkoite | K2Ca4[Si7O18(OH)](OH,F) | Tric. |
9.DG.75 | Senkevichite | CsKNaCa2TiO[Si7O18](OH) | Tric. 1 : P1 |
9.DG.80 | Canasite | K3Na3Ca5Si12O30(OH)4 | Mon. m : Bm |
9.DG.80 | Fluorcanasite | K3Na3Ca5Si12O30F4 · H2O | Mon. m : Bm |
9.DG.85 | Miserite | K1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2O | Tric. |
9.DG.90 | Frankamenite | K3Na3Ca5(Si12O30)(F,OH)4 · H2O | Tric. 1 : P1 |
9.DG.92 | Charoite | (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 · ~3H2O | Mon. 2/m : P21/m |
9.DG.95 | Yuksporite | K4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3 | Mon. 2/m : P21/m |
9.DG.97 | Eveslogite | (Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14 | Mon. 2/m : P2/m |
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.
References for Wollastonite-1A
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-1A
mindat.org URL:
https://www.mindat.org/min-7369.html
Please feel free to link to this page.
Please feel free to link to this page.
Mineral Dealers:
Localities for Wollastonite-1A
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.
Italy | |
| Van King; www.dinet.it/Mineral-GMC/AMI/vesuvio.html. |
Japan | |
| Henmi, C., Kawahara, A., Henmi, K., Kusachi, I., Takeuchi, Y. (1983) The 3T, 4T and 5T polytypes of wollastonite from Kushiro, Hiroshima Prefecture, Japan. American Mineralogist: 68: 156-163. |
Mexico | |
| www.lpi.usra.edu/meetings/metsoc2002/pdf/5053.pdf. |
Romania | |
| Klaproth, M.H. (1802): Chemische Untersuchung des Tafelspaths, Beiträge zur chemischen Kenntniss der Mineralkörper, Dritter Band, Rottmann Berlin, 289-291 |
USA | |
| PXRD by John Attard (Attard XRD Services, San Diego). |
| University of Arizona Mineral Museum 12446. |
| [micromounts@yahoogroups.com] |
In-Ko-Pah Gorge, Boulder Park, Imperial County, California, USA