Clinohedrite Mineral Data

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General Clinohedrite Information

Chemical Formula:

CaZnSiO4•(H2O)

Composition:

Molecular Weight = 215.57 gm

Calcium 18.59 % Ca 26.01 % CaO

Zinc 30.33 % Zn 37.76 % ZnO

Silicon 13.03 % Si 27.87 % SiO₂

Hydrogen 0.94 % H 8.36 % H₂O

Oxygen 37.11 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaZn(SiO₄)•(H₂O)

Environment:

In a metamorphosed stratiform zinc orebody.

IMA Status:

Valid Species (Pre-IMA) 1898

Locality:

Franklin, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

From the Greek "klino", for incline, and "hedra", for face, for the inclined facial character of the crystal morphology.

Name Pronunciation:

Clinohedrite + Pronunciation

Synonym:

ICSD 200432

PDF 17-214

Clinohedrite Image

Images:

Click Here for Larger Clinohedrite Image

Clinohedrite Epidote-(Pb)

Comments: Clear crystals of clinohedrite on hancockite (epidote-(Pb)).
Location: Franklin, Sussex County, New Jersey, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Clinohedrite Crystallography

Axial Ratios:

a:b:c =0.3406:1:0.3287

Cell Dimensions:

a = 5.43, b = 15.94, c = 5.24, Z = 4; beta = 103.933° V = 440.20 Den(Calc)= 3.25

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Aa

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

By Intensity(I/I_o): 2.76(1), 3.23(0.7), 2.5(0.6),

Crystal Structure:

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Venetopoulos C C , Rentzeperis P J , Zeitschrift fur Kristallographie , 144 (1976) p.377-392, Redetermination of the crystal structure of clinohedrite, CaZnSiO4*H2O

Physical Properties of Clinohedrite

Cleavage:

{010} Perfect

Color:

Colorless, White, Amethystine red.

Density:

3.33

Diaphaneity:

Translucent to subtranslucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

5.5 - Knife Blade

Luminescence:

Fluorescent, Short UV=orange, Long UV=orange.

Luster:

Vitreous (Glassy)

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Clinohedrite

Gladstone-Dale:

CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2049,KPDmeas= 0.2,KC= 0.2007
Ncalc = 1.65 - 1.67

Optical Data:

Biaxial (-), a=1.662, b=1.667, g=1.669, bire=0.0070

Calculated Properties of Clinohedrite

Electron Density:

Bulk Density (Electron Density)=3.27 gm/cc
note: Specific Gravity of Clinohedrite =3.33 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Clinohedrite= 17.59 barns/electron
U=PE_Clinohedrite x rElectron Density= 57.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clinohedrite is Not Radioactive

Clinohedrite Classification

Dana Class:

52.02.01.02 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.02)with cations in [4] and >[4] coordination

(52.02.01)Euclase group

52.02.01.01 Euclase BeAlSiO4(OH) P 2₁/a 2/m

52.02.01.02 Clinohedrite CaZnSiO4•(H2O) Aa m

52.02.01.03 Hodgkinsonite MnZn2SiO4(OH)2 P 2₁/c 2/m

52.02.01.04 Gerstmannite (Mg,Mn)2ZnSiO4(OH)2 Bbam 2/m 2/m 2/m

Strunz Class:

09.AE.30 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AE -Nesosilicates with additional (O,OH,F,H2O);

09.AE.30 Clinohedrite CaZnSiO4•(H2O) Aa m

Other Clinohedrite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Clinohedrite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - Franklin Minerals(Palache)
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - MinMax(Deutsch)
14 - MinMax(English)
15 - Mineralienatlas (Deutsch)
16 - Minerals of Franklin and Sterling Hill
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - WWW-MINCRYST

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Print or Cut-and-Paste your Clinohedrite Specimen Label here :

Clinohedrite

CaZnSiO4•(H2O)
Dana No: 52.02.01.02 Strunz No: 09.AE.30
Locality:

Notes: