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Earlandite Mineral Data
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General Earlandite Information
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 Chemical Formula: |
Ca3(C6H5O7)•4(H2O) |
| Composition: |
Molecular Weight = 570.50 gm |
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Calcium 21.08 % Ca |
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Hydrogen 3.18 % H |
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Carbon 25.26 % C |
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Oxygen 50.48 % O |
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______ |
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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 |
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Earlandite Crystallography
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| 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 |
| X Ray Diffraction: |
By Intensity(I/Io): 15.5(1), 7.7(0.5), 5.2(0.35), |
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Physical Properties of Earlandite
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| Color: |
White, Light yellow. |
| Density: |
1.95 |
| Habit: |
Nodular - Tuberose forms having irregular protuberances over the surface. |
| Streak: |
white |
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Optical Properties of Earlandite
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| Optical Data: |
Biaxial (+), a=1.52, b=1.53, g=1.58, bire=0.0600, 2V(Calc)=50, 2V(Meas)=60. |
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Calculated Properties of Earlandite
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| Electron Density: |
Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Earlandite =1.96 gm/cc.
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| Fermion Index: |
Fermion Index = 0.003310658
Boson Index = 0.996689342 |
| Photoelectric: |
PEEarlandite = 2.72 barns/electron
U=PEEarlandite x rElectron Density= 5.49 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Earlandite is Not Radioactive |
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Earlandite Classification
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| Dana Class: |
50.02.02.01 (50)Salts of Organic Acids |
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(50.02)(Mellitates, Citrates, Cyanates, and Acetates) |
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(50.02.02)Dana Group |
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50.02.02.01 Earlandite Ca3(C6H5O7)•4(H2O) Unk Mono |
| Strunz Class: |
10.AC.10 10 - ORGANIC COMPOUNDS |
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10.A - Salts of Organic Acids |
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10.AC -Benzene Salts |
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10.AC.10 Earlandite Ca3(C6H5O7)•4(H2O) Unk Mono |
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Other Earlandite Information
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| 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 :
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Earlandite
Ca3(C6H5O7)•4(H2O)
Dana No: 50.02.02.01 Strunz No: 10.AC.10
Locality:
Notes:
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