Santaclaraite Mineral Data

General Santaclaraite Information

Chemical Formula:

CaMn++4Si5O14(OH)2•(H2O)

Composition:

Molecular Weight = 676.28 gm

Calcium 5.93 % Ca 8.29 % CaO

Manganese 32.49 % Mn 41.96 % MnO

Silicon 20.76 % Si 44.42 % SiO₂

Hydrogen 0.60 % H 5.33 % H₂O

Oxygen 40.22 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaMn²⁺₄Si₅O₁₄(OH)₂•(H₂O)

IMA Status:

Approved IMA 1981

Locality:

Pennsylvania mine, SW side of San Antonio Valley, 4 miles ENE of Mount Hamilton, Santa Clara Co., California, USA. Link to MinDat.org Location Data.

Name Origin:

Named after it's locality.

Name Pronunciation:

Santaclaraite + Pronunciation

Santaclaraite Image

Images:

Santaclaraite

Comments: Flesh-colored crystalline aggregates of Santaclaraite.
Location: Corral Hollow, Alemada County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Santaclaraite Crystallography

Axial Ratios:

a:b:c =2.0561:1:1.5787

Cell Dimensions:

a = 15.633, b = 7.603, c = 12.003, Z = 4; alpha = 109.71°, beta = 88.61°, gamma = 99.95° V = 1,322.47 Den(Calc)= 3.40

Crystal System:

Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 7.04(1), 3.003(0.84), 3.152(0.8),

Physical Properties of Santaclaraite

Cleavage:

{100} Good, {010} Good

Color:

Light pink, Reddish orange.

Density:

3.31

Diaphaneity:

Transparent to Translucent

Hardness:

6.5 - Pyrite

Luster:

Vitreous (Glassy)

Streak:

light pink

Optical Properties of Santaclaraite

Gladstone-Dale:

CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2044,KPDmeas= 0.21,KC= 0.2106
Ncalc = 1.7 - 1.72

Optical Data:

Biaxial (-), a=1.681, b=1.696, g=1.708, bire=0.0270, 2V(Calc)=82, 2V(Meas)=83.

Calculated Properties of Santaclaraite

Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Santaclaraite =3.31 gm/cc.

Fermion Index:

Fermion Index = 0.0099710723
Boson Index = 0.9900289277

Photoelectric:

PE_{Santaclaraite}= 9.79 barns/electron
U=PE_{Santaclaraite} x rElectron Density= 31.62 barns/cc.

Radioactivity:

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

Santaclaraite Classification

Dana Class:

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

(65.04)with chains P=5

(65.04.02)Dana Group

65.04.02.01 Santaclaraite CaMn4Si5O14(OH)2•(H2O) P1 1

Strunz Class:

09.DK.10 09 - SILICATES (Germanates)

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

09.DK -Inosilicates with 5-periodic single chains

09.DK.10 Santaclaraite CaMn4Si5O14(OH)2•(H2O) P1 1

Other Santaclaraite Information

References:

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

See Also:

Links to other databases for Santaclaraite :
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
15 - WWW-MINCRYST

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

Santaclaraite

CaMn++4Si5O14(OH)2•(H2O)
Dana No: 65.04.02.01 Strunz No: 09.DK.10
Locality:

Notes:

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