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Clinohedrite

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About ClinohedriteHide

Formula:
CaZn(SiO4) · H2O
Colour:
Colorless, pale amethystine (rare)
Lustre:
Vitreous
Hardness:
Crystal System:
Monoclinic
Name:
Named in 1898 by Samuel L. Penfield and Harry W. Foote from the Greek κλινειν "to incline and εδρα hedra, for face, for the characteristic inclined faces of the crystals.

Classification of ClinohedriteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.AE.30

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
52.2.1.2

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
2 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
14.7.16

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn

Physical Properties of ClinohedriteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Colorless, pale amethystine (rare)
Streak:
White
Hardness:
5½ on Mohs scale

Optical Data of ClinohedriteHide

Type:
Biaxial (-)
RI values:
nα = 1.662 nβ = 1.667 nγ = 1.669
2V:
Measured: 64°
Birefringence:
0.007
Max Birefringence:
δ = 0.007
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak r > v
Optical Extinction:
Y = b, Z ^ c = 61°

Chemical Properties of ClinohedriteHide

Formula:
CaZn(SiO4) · H2O
Common Impurities:
Fe,Al,Mn,Mg

Crystallography of ClinohedriteHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bb
Setting:
Cc
Cell Parameters:
a = 5.09 Å, b = 15.82 Å, c = 5.38 Å
β = 103.39°
Ratio:
a:b:c = 0.322 : 1 : 0.34
Unit Cell V:
421.44 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Usually massive in veinlets, crystal rare and show low symmetry.

Crystallographic forms of ClinohedriteHide

Crystal Atlas:
Image Loading
Click on an icon to view
Clinohedrite no.2 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Edge Lines | Miller Indices | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
7.81 Å(50)
3.97 Å(50)
3.23 Å(70)
2.76 Å(100)
2.50 Å(60)
2.47 Å(40)
2.36 Å(50)
1.990 Å(40)
Comments:
ICDD 17-214

Type Occurrence of ClinohedriteHide

General Appearance of Type Material:
extremely thin to thick fracture coatings, in cavities, rarely as crusts of free growing crystals.
Geological Setting of Type Material:
In hydrothermally altered, metamorphosed zinc-manganese-iron silicate-oxide orebody.
Associated Minerals at Type Locality:

Other Language Names for ClinohedriteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
105 photos of Clinohedrite associated with WillemiteZn2SiO4
79 photos of Clinohedrite associated with HardystoniteCa2Zn(Si2O7)
46 photos of Clinohedrite associated with FrankliniteZn2+Fe3+2O4
41 photos of Clinohedrite associated with CalciteCaCO3
31 photos of Clinohedrite associated with HendricksiteKZn3(Si3Al)O10(OH)2
29 photos of Clinohedrite associated with AndraditeCa3Fe3+2(SiO4)3
22 photos of Clinohedrite associated with Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
18 photos of Clinohedrite associated with CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O
18 photos of Clinohedrite associated with RoeblingitePb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2O
16 photos of Clinohedrite associated with XonotliteCa6(Si6O17)(OH)2

Related Minerals - Nickel-Strunz GroupingHide

9.AE.05BerylliteBe3(SiO4)(OH)2 · H2OOrth.
9.AE.10EuclaseBeAl(SiO4)(OH)Mon. 2/m : P21/b
9.AE.15SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
9.AE.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2Mon.
9.AE.25GerstmanniteMnMgZn(SiO4)(OH)2Orth.
9.AE.35StringhamiteCaCu(SiO4) · H2OMon.
9.AE.40Katoptrite(Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20Mon. 2/m : B2/m
9.AE.45YeatmaniteZn6Mn2+9Sb5+2(SiO4)4O12Tric.
9.AE.50SphaerobertranditeBe3(SiO4)(OH)2Mon. 2/m : P21/b

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

52.2.1.1EuclaseBeAl(SiO4)(OH)Mon. 2/m : P21/b
52.2.1.3HodgkinsoniteMn2+Zn2(SiO4)(OH)2Mon.
52.2.1.4GerstmanniteMnMgZn(SiO4)(OH)2Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.7.1SanborniteBa2(Si4O10)Orth.
14.7.2KrauskopfiteBaSi2O5 · 3H2OMon.
14.7.3WalstromiteBaCa2(Si3O9)Tric.
14.7.4MacdonalditeBaCa4Si16O36(OH)2 · 10H2OOrth.
14.7.5EricssoniteBaMn2+2Fe3+(Si2O7)O(OH)Mon. 2/m : B2/m
14.7.6Ericssonite-2OBaMn2+2Fe3+(Si2O7)O(OH)Orth.
14.7.7GillespiteBaFe2+Si4O10Tet.
14.7.8AndrémeyeriteBaFe2+2(Si2O7)Mon.
14.7.9PellyiteBa2Ca(Fe,Mg)2Si6O17Orth.
14.7.10TaikaniteSr3BaMn2+2(Si4O12)O2Mon.
14.7.11WillemiteZn2SiO4Trig. 3 : R3
14.7.12HemimorphiteZn4Si2O7(OH)2 · H2OOrth. mm2 : Imm2
14.7.13ZincsiliteZn3(Si4O10)(OH)2 · 4H2OMon.
14.7.14HardystoniteCa2Zn(Si2O7)Tet. 4 2m : P4 21m
14.7.15PetedunniteCa(Zn,Mn2+,Mg,Fe2+)Si2O6Mon.
14.7.17JunitoiteCaZn2Si2O7 · H2OOrth. mm2
14.7.18LarsenitePbZnSiO4Orth. mm2 : Pna21
14.7.19EsperitePbCa2Zn3(SiO4)3Mon. 2/m : P21/b
14.7.20HodgkinsoniteMn2+Zn2(SiO4)(OH)2Mon.
14.7.21GerstmanniteMnMgZn(SiO4)(OH)2Orth.
14.7.22GageiteMn21(Si4O12)2O3(OH)20Mon. 2/m
14.7.23FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2

Fluorescence of ClinohedriteHide

Bright orange (SW UV); dull orange (LW UV).

Other InformationHide

Health Risks:
None.
Industrial Uses:
None.

References for ClinohedriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Palache, Charles (1935) The minerals of Franklin and Sterling Hill, Sussex County, New Jersey. United States Geological Survey Professional Paper 180: 106.
Venetopoulos, C.C. and Rentzeperis, P.J. (1976) Redetermination of the crystal structure of clinohedrite, CaZnSiO4.H2O. Zeitschrift für Kristallographie, 144, 377-392.
Dunn, P.J., Peacor, D.R., Leavens, P.B., and Baum, J.L. (1983) Charlesite, a new mineral of the ettringite group, from Franklin, New Jersey. American Mineralogist, 68, 1033-1037.
Dunn, P.J. (1995) Part 3, 365.

Internet Links for ClinohedriteHide

Localities for ClinohedriteHide

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.
China
 
  • Gansu
    • Gannan
      • Luqu Co.
Hanjie Wen, Carignan, J., Yuzhuo Qiu, and Shirong Liu (2006): Environmental Science and Technology 40(4), 1126-1132.
Israel
 
  • Southern District (HaDarom District)
Vapnik, Y., Galuskina, I., Murashko, M., Britvin, S., & Galuskin, E. (2014). The Hatrurim Complex-the New Unique Locality on World Mineral Map: the Review of Mineral Discoveries. In Israel Geological Society 2014, Annual Meeting, En Boqeq (pp. 143-144).
Jordan
 
  • Amman Governorate
    • Hashem region
Information from Russian mineralogists Igor Pekov and Mikhail Murashko, via Sergey Vasiliev. The material was analyzed by x-ray diffraction and microprobe, respectively. James Cheshire collection.
USA
 
  • Arizona
    • Gila Co.
      • Dripping Spring Mountains
        • Banner Mining District
          • Christmas
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 177; Rocks & Min.:60:238; Dr. Sidney Williams, AZ
  • New Jersey
    • Sussex County
      • Franklin Mining District
        • Franklin
Palache(1935):106; Dunn, et al: Am. Min.:68:1033-1037 (1983); Dunn(1995):Pt3:365.
Steven Phillips
Van King; Chester S. Lemanski, Jr.; Ronald DeBlois.
Weissman purchased specimen
 
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