Earlandite Mineral Data

General Earlandite Information

Chemical Formula:

Ca3(C6H5O7)•4(H2O)

Composition:

Molecular Weight = 570.50 gm

Calcium 21.08 % Ca

Hydrogen 3.18 % H

Carbon 25.26 % C

Oxygen 50.48 % O

______

100.00 %

Empirical Formula:

Ca₃2(C₆)2(H₅)2(O₇)•4(H₂O)

Environment:

Ocean bottom sample at 2,580 meters.

IMA Status:

Valid Species (Pre-IMA) 1936

Locality:

Weddell sea, Antarctica. Link to MinDat.org Location Data.

Name Origin:

Named for Arthur Earland, English oceanographer.

Name Pronunciation:

Earlandite + Pronunciation

Synonym:

Calcium Citrate

Earlandite Crystallography

Axial Ratios:

a:b:c =5.2175:1:1.7807

Cell Dimensions:

a = 30.94, b = 5.93, c = 10.56, Z = 4; beta = 93.74° V = 1,933.36 Den(Calc)= 1.96

Crystal System:

Monoclinic Space Group: Unk

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

By Intensity(I/I_o): 15.5(1), 7.7(0.5), 5.2(0.35),

Physical Properties of Earlandite

Color:

White, Light yellow.

Density:

1.95

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Streak:

white

Optical Properties of Earlandite

Optical Data:

Biaxial (+), a=1.52, b=1.53, g=1.58, bire=0.0600, 2V(Calc)=50, 2V(Meas)=60.

Calculated Properties of Earlandite

Electron Density:

Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Earlandite =1.96 gm/cc.

Fermion Index:

Fermion Index = 0.003310658
Boson Index = 0.996689342

Photoelectric:

PE_Earlandite= 2.72 barns/electron
U=PE_Earlandite x rElectron Density= 5.49 barns/cc.

Radioactivity:

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

Earlandite Classification

Dana Class:

50.02.02.01 (50)Salts of Organic Acids

(50.02)(Mellitates, Citrates, Cyanates, and Acetates)

(50.02.02)Dana Group

50.02.02.01 Earlandite Ca3(C6H5O7)•4(H2O) Unk Mono

Strunz Class:

10.AC.10 10 - ORGANIC COMPOUNDS

10.A - Salts of Organic Acids

10.AC -Benzene Salts

10.AC.10 Earlandite Ca3(C6H5O7)•4(H2O) Unk Mono

Other Earlandite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Earlandite :
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

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

Earlandite

Ca3(C6H5O7)•4(H2O)
Dana No: 50.02.02.01 Strunz No: 10.AC.10
Locality:

Notes:

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