Wollastonite-1A Mineral Data

Advertisment

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

RocKeeper is software designed to curate your collection the way it was meant to be curated. No awkward spreadsheets, no cumbersome forms adapted from other software. Just a nice, clean tool designed from the ground up to really showcase your rock collect

Join the club, silver, gold and platinum-level memberships available as low as $10.00 a month. High quality mineral specimens mailed to your home or school each month. An affordable way to build your collection.

General Wollastonite-1A Information

Chemical Formula:

CaSiO3

Composition:

Molecular Weight = 116.16 gm

Calcium 34.50 % Ca 48.28 % CaO

Silicon 24.18 % Si 51.72 % SiO₂

Oxygen 41.32 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaSiO₃

IMA Status:

Valid Species (Pre-IMA) 1818

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named after the English mineralogist and chemist, W. H. Wollaston (1766-1828).

Name Pronunciation:

Wollastonite-1A + Pronunciation

Synonym:

Wollastonite

Wollastonite-1T

Wollastonite-1A Image

Images:

Click Here for Larger Wollastonite-1A Image

Wollastonite-1A Stringhamite

Comments: Rounded aggregate of dark blue stringhamite crystals on bladed, white wollastonite.
Location: Christmas mine, Hayden, Gila County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Wollastonite-1A Minehillite Margarosanite

Comments: White pearly crystalline minehillite with white margarosanite and dark gray lead, in pale pink opaque wollastonite (distinguished by blue-white fluorescence).
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wollastonite-1A Crystallography

Axial Ratios:

a:b:c =1.0846:1:0.9658

Cell Dimensions:

a = 7.94, b = 7.32, c = 7.07, Z = 6; alpha = 90.033°, beta = 95.367°, gamma = 103.433° V = 397.92 Den(Calc)= 2.91

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.314(1), 3.83(0.85), 3.52(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Ohashi Y , Finger L W , American Mineralogist , 63 (1978) p.274-288, The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite,, wollastonite, and the pectolite-schizolite-serandite series, sample Mn-WO, from Broken Hill, New South Wales, Australia

View Additional jPOWD Structure files for Wollastonite-1A
[1] [2] [3]

Physical Properties of Wollastonite-1A

Cleavage:

{100} Perfect, {102} Good, {001} Good

Color:

White, Yellow, Gray, Red, Brown.

Density:

2.8 - 2.9, Average = 2.84

Diaphaneity:

Subtransparent to translucent

Fracture:

Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Habit:

Massive - Fibrous - Distinctly fibrous fine-grained forms.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

5 - Apatite

Luster:

Vitreous - Silky

Streak:

white

Optical Properties of Wollastonite-1A

Gladstone-Dale:

CI meas= -0.074 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2198,KPDmeas= 0.2244,KC= 0.209
Ncalc = 1.59 - 1.61

Optical Data:

Biaxial (-), a=1.615-1.646, b=1.627-1.659, g=1.629-1.662, bire=0.0140-0.0160, 2V(Calc)=44-50, 2V(Meas)=40. Dispersion r > v distinct.

Calculated Properties of Wollastonite-1A

Electron Density:

Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Wollastonite-1A =2.91 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Wollastonite-1A}= 5.15 barns/electron
U=PE_{Wollastonite-1A} x rElectron Density= 14.97 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wollastonite-1A is Not Radioactive

Wollastonite-1A Classification

Dana Class:

65.02.01.01a (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.02)with chains P=3

(65.02.01)Wollastonite group

65.02.01.01a Wollastonite-1A CaSiO3 P1 1

65.02.01.01b Wollastonite-2M* CaSiO3 P 2₁ 2

65.02.01.01c Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1

65.02.01.02 Bustamite (Mn,Ca)3Si3O9 P1 1

65.02.01.03 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1

65.02.01.04 Pectolite NaCa2Si3O8(OH) P1 1

65.02.01.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1

65.02.01.06 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1

65.02.01.07 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono

65.02.01.08 Tanohataite! LiMn2Si3O8(OH) P1 1

Strunz Class:

09.DG.05 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DG -Inosilicates with 3-periodic single and multiple chains

09.DG.05 Bustamite (Mn,Ca)3Si3O9 P1 1

09.DG.05 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1

09.DG.05 Pectolite NaCa2Si3O8(OH) P1 1

09.DG.05 Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1

09.DG.05 Wollastonite-1A CaSiO3 P1 1

09.DG.05 Wollastonite-2M* CaSiO3 P 2₁ 2

09.DG.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1

Other Wollastonite-1A Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990;Dana8) OPTIC PROP.(Heinrich65)

See Also:

Links to other databases for Wollastonite-1A :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
12 - University of Colorado - Mineral Structure Data

Search for Wollastonite-1A using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Wollastonite-1A :

B and L Fine Minerals Google Search for Wollastonite-1A
Dakota Matrix Minerals Google Search for Wollastonite-1A
Dan & Diana Weinrich Mineral Auctions Google Search for Wollastonite-1A
Excalibur Mineral Corp. Google Search for Wollastonite-1A
Exceptional Minerals Google Search for Wollastonite-1A
FEI QEMSCAN SEM Website Link
FEI Natural Resources Website Link
John Betts Fine Minerals Google Search for Wollastonite-1A
Mineral News Website Link
Mineral of the Month Club Google Search for Wollastonite-1A
Rockeeper Website Link
TIMA Mineral Analyzer Website Link
Weinrich Minerals, Inc. Google Search for Wollastonite-1A
Wright's Rock Shop Google Search for Wollastonite-1A

Ask about Wollastonite-1A here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Wollastonite-1A Specimen Label here :

Wollastonite-1A

CaSiO3
Dana No: 65.02.01.01a Strunz No: 09.DG.05
Locality:

Notes: