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Cascandite Mineral Data

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General Cascandite Information

Help on Chemical  Formula: Chemical Formula: Ca(Sc,Fe++)Si3O8(OH)
Help on Composition: Composition: Molecular Weight = 317.02 gm
   Calcium   12.64 %  Ca   17.69 % CaO
   Scandium  10.64 %  Sc   16.31 % Sc2O3
   Iron       4.40 %  Fe    5.67 % FeO
   Silicon   26.58 %  Si   56.86 % SiO2
   Hydrogen   0.32 %  H     2.84 % H2O
   Oxygen    45.42 %  O
            ______        ______ 
            100.00 %       99.37 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaSc0.75Fe2+0.25Si3O8(OH)
Help on Environment: Environment: In miarolitic cavities in granite.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: From the Diverio quarry, Mt. Mottarone, near Baveno, Piedmont, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for CAlcium and SCANDium in the composition.
Help on Synonym: Synonym: ICSD 17047
  PDF 35-541

Cascandite Image

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  Cascandite   Jervisite

Comments: White, acicular jervisite crystals and pink cascandite crystals.
Location: Seula min,, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy. Scale: Crystal Size 1 mm.
© Sergio Varvello / Mineral Service

Cascandite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9396:1:0.679
Help on Cell Dimensions: Cell Dimensions: a = 9.791, b = 10.42, c = 7.076, Z = 4; alpha = 98.91°, beta = 102.63°, gamma = 84.17° V = 692.34 Den(Calc)= 3.04
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: C1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.821(1), 3.62(0.75), 3.1(0.65),

Physical Properties of Cascandite

Help on Cleavage: Cleavage: {100} Good, {001} Good
Help on Color: Color: Light pink.
Help on Density: Density: 3.01
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4.5-5.5 - Near Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Cascandite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.028 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2223,KPDmeas= 0.2238,KC= 0.2177
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (?), a=1.663, g=1.684, bire=0.0210

Calculated Properties of Cascandite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Cascandite =3.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECascandite = 5.36 barns/electron
U=PECascandite x rElectron Density= 16.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cascandite is Not Radioactive

Cascandite Classification

Help on  Dana Class: Dana Class: (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.02)with chains P=3
  (65.02.01)Wollastonite group Wollastonite-1A CaSiO3 P1 1 Wollastonite-2M* CaSiO3 P 21 2 Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1 Bustamite (Mn,Ca)3Si3O9 P1 1 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1 Pectolite NaCa2Si3O8(OH) P1 1 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono Tanohataite! LiMn2Si3O8(OH) P1 1
Help on  Strunz Class: Strunz Class: 09.DG.07 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DG -Inosilicates with 3-periodic single and multiple chains
09.DG.07 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1

Other Cascandite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Cascandite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 09.DG.07





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