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Clinohedrite

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Formula:
CaZn(SiO
 
4
) · H
 
2
O
System:MonoclinicColour:Colorless, pale ...
Hardness:
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.


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Classification of Clinohedrite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/B.03-30
Nickel-Strunz 10th (pending) edition ID:9.AE.30

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
Dana 8th edition ID: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
Hey's CIM Ref.:14.7.16

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

Type Locality:Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
General Appearance of Type Material:extremely thin to thick fracture coatings, in cavities, rarely as crusts of free growing crystals.
Year of Discovery:1898
Geological Setting of type material:In hydrothermally altered, metamorphosed zinc-manganese-iron silicate-oxide orebody.
Associated Minerals at type locality:
WillemiteRoeblingiteHardystoniteEsperiteDatolite
BustamiteAndradite

Physical Properties of Clinohedrite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colorless, pale amethystine (rare)
Streak:White
Hardness (Mohs):

Crystallography of Clinohedrite

Crystal System:Monoclinic
Cell Parameters:a = 5.09Å, b = 15.82Å, c = 5.38Å
β = 103.39°
Ratio:a:b:c = 0.322 : 1 : 0.34
Unit Cell Volume:V 421.44 ų (Calculated from Unit Cell)
Crystal Atlas:
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Clinohedrite no.2 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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X-Ray Powder Diffraction:
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Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Clinohedrite

Type:Biaxial (-)
RI values: nα = 1.662 nβ = 1.667 nγ = 1.669
Maximum Birefringence:δ = 0.007

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:weak

Chemical Properties of Clinohedrite

Formula:
CaZn(SiO
 
4
) · H
 
2
O
Simplified for copy/paste:CaZn(SiO4)·H2O
Essential elements:Ca, H, O, Si, Zn
All elements listed in formula:Ca, H, O, Si, Zn
Common Impurities:Fe,Al,Mn,Mg

Relationship of Clinohedrite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AE.05Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
· H
 
2
O
9.AE.10Euclase
BeAl(SiO
 
4
)(OH)
9.AE.15Sverigeite
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
9.AE.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
9.AE.25Gerstmannite
MnMgZn(SiO
 
4
)(OH)
 
2
9.AE.35Stringhamite
CaCu(SiO
 
4
) · H
 
2
O
9.AE.40Katoptrite
(Mn
2+
 
,Mg)
 
13
(Al,Fe
3+
 
)
 
4
Sb
5+
2
(SiO
 
4
)
 
2
O
 
20
9.AE.45Yeatmanite
Zn
 
6
Mn
2+
9
Sb
5+
2
(SiO
 
4
)
 
4
O
 
12
9.AE.50Sphaerobertrandite
Be
 
3
(SiO
 
4
)(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
14.7.1Sanbornite
Ba
 
2
(Si
 
4
O
 
10
)
14.7.2Krauskopfite
BaSi
 
2
O
 
5
· 3H
 
2
O
14.7.3Walstromite
BaCa
 
2
(Si
 
3
O
 
9
)
14.7.4Macdonaldite
BaCa
 
4
Si
 
16
O
 
36
(OH)
 
2
· 10H
 
2
O
14.7.5Ericssonite
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.6Ericssonite-2O
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
14.7.7Gillespite
BaFe
2+
 
[Si
 
4
O
 
10
]
14.7.8Andrémeyerite
BaFe
2+
2
(Si
 
2
O
 
7
)
14.7.9Pellyite
Ba
 
2
Ca(Fe,Mg)
 
2
Si
 
6
O
 
17
14.7.10Taikanite
Sr
 
3
BaMn
2+
2
(Si
 
4
O
 
12
)O
 
2
14.7.11Willemite
Zn
 
2
SiO
 
4
14.7.12Hemimorphite
Zn
 
4
Si
 
2
O
 
7
(OH)
 
2
· H
 
2
O
14.7.13Zincsilite
Zn
 
3
(Si
 
4
O
 
10
)(OH)
 
2
· 4H
 
2
O
14.7.14Hardystonite
Ca
 
2
Zn(Si
 
2
O
 
7
)
14.7.15Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)Si
 
2
O
 
6
14.7.17Junitoite
CaZn
 
2
Si
 
2
O
 
7
· H
 
2
O
14.7.18Larsenite
PbZnSiO
 
4
14.7.19Esperite
PbCa
 
2
Zn
 
3
(SiO
 
4
)
 
3
14.7.20Hodgkinsonite
Mn
2+
 
Zn
 
2
(SiO
 
4
)(OH)
 
2
14.7.21Gerstmannite
MnMgZn(SiO
 
4
)(OH)
 
2
14.7.22Gageite
Mn
 
21
(Si
 
4
O
 
12
)
 
2
O
 
3
(OH)
 
20
14.7.23Franklinfurnaceite
Ca
 
2
Fe
3+
 
Mn
2+
3
Mn
3+
 
(Zn
 
2
Si
 
2
O
 
10
)(OH)
 
8

Other Names for Clinohedrite

Other Languages:
German:Clinohedrit
Klinoedrit
Russian:Клиноэдрит
Spanish:Clinohedrita

Other Information

Fluorescence in UV light:Bright orange (SW UV); dull orange (LW UV).
Health Warning:None.
Industrial Uses:None.

References for Clinohedrite

Reference List:

- +
Palache, Charles (1935), USGS PP 180: 106.

Dunn, P.J., et al (1983): American Mineralogy: 68: 1033-1037.

Dunn, P.J. (1995): Pt3: 365.

Zeitschrift für Kristallographie: 144: 377-392.

Internet Links for Clinohedrite

Search Engines:
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  • External Links:
  • Look for Clinohedrite on Webmineral
  • Look for Clinohedrite on Athena Mineralogy
  • Look for Clinohedrite on Wikipedia
  • Look for Clinohedrite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Clinohedrite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Fabre Minerals - search for Clinohedrite specimens
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  • Rare and Unusual minerals at Mineralogical Research Company
  • Localities for Clinohedrite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Gansu Province
      • Gannan Autonomous Prefecture
        • Luqu Co.
    Hanjie Wen, Carignan, J., Yuzhuo Qiu, and Shirong Liu (2006): Environmental Science and Technology 40(4), 1126-1132.
    USA
     
    • Arizona
      • Gila Co.
        • Dripping Spring Mts
          • Banner District
            • Christmas area
              • Christmas
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 177; Rocks & Min.:60:238; Dr. Sidney Williams, AZ
    • New Jersey
      • Sussex Co.
        • 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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