Cesanite Mineral Data

General Cesanite Information

Chemical Formula:

Na7Ca3(SO4)6(OH)•0.8(H2O)

Composition:

Molecular Weight = 888.96 gm

Sodium 18.10 % Na 24.40 % Na₂O

Calcium 13.53 % Ca 18.92 % CaO

Hydrogen 0.29 % H 2.63 % H₂O

Sulfur 21.64 % S 54.04 % SO₃

Oxygen 46.43 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₇Ca₃(SO₄)₆(OH)•0.8(H₂O)

IMA Status:

Approved IMA 1981

Locality:

Core samples from the Cesano-I geothermal well, Cesano area, Latium, Italy. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

ICSD 31251

PDF 35-506

Cesanite Crystallography

Axial Ratios:

a:c = 1:0.73008

Cell Dimensions:

a = 9.463, c = 6.9088, Z = 1; V = 535.79 Den(Calc)= 2.75

Crystal System:

Hexagonal - Trigonal Dipyramidal H-M Symbol (6) Space Group: P 6

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

By Intensity(I/I_o): 2.727(1), 3.448(0.87), 3.896(0.66),

Physical Properties of Cesanite

Color:

Colorless, White.

Density:

2.786

Diaphaneity:

Transparent

Hardness:

2-3 - Gypsum-Calcite

Streak:

white

Optical Properties of Cesanite

Gladstone-Dale:

CI meas= -0.067 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2062,KPDmeas= 0.2035,KC= 0.1907
Ncalc = 1.52 - 1.53

Optical Data:

Uniaxial (-), e=1.564, w=1.57, bire=0.0060.

Calculated Properties of Cesanite

Electron Density:

Bulk Density (Electron Density)=2.77 gm/cc
note: Specific Gravity of Cesanite =2.79 gm/cc.

Fermion Index:

Fermion Index = 0.0020291221
Boson Index = 0.9979708779

Photoelectric:

PE_Cesanite= 3.26 barns/electron
U=PE_Cesanite x rElectron Density= 9.04 barns/cc.

Radioactivity:

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

Cesanite Classification

Dana Class:

30.03.03.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.03)with miscellaneous formulae

(30.03.03)Dana Group

30.03.03.01 Cesanite Na7Ca3(SO4)6(OH)•0.8(H2O) P 6 6

30.03.03.02 Aiolosite! Na4Bi(SO4)3Cl P 6₃/m 6/m

Strunz Class:

07.BD.20 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BD -With only large cations

07.BD.20 Cesanite Na7Ca3(SO4)6(OH)•0.8(H2O) P 6 6

07.BD.20 Caracolite Na3Pb2(SO4)3Cl P 2₁/m 2/m

Other Cesanite Information

References:

NAME( AmMin, Vol 87, p 715) PHYS. PROP.(AmMin, Vol 87, p 715) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Cesanite :
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 Cesanite Specimen Label here :

Cesanite

Na7Ca3(SO4)6(OH)•0.8(H2O)
Dana No: 30.03.03.01 Strunz No: 07.BD.20
Locality:

Notes:

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