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Formicaite Mineral Data
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General Formicaite Information
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 Chemical Formula: |
Ca(HCOO)2 |
| Composition: |
Molecular Weight = 130.11 gm |
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Calcium 30.80 % Ca |
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Hydrogen 1.55 % H |
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Carbon 18.46 % C |
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Oxygen 49.19 % O |
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______ |
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100.00 % |
| Empirical Formula: |
Ca2(H)2(C)2(O2) |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
The Solondo borno deposit, Buryatia and the Novofrolovskoye copper deposit, Urals, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its composition. |
| Synonym: |
Calcium Formate |
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IMA1998-030 |
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Formicaite Crystallography
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| Axial Ratios: |
a:c = 1:1.39778 |
| Cell Dimensions: |
a = 6.77, c = 9.463, Z = 4; V = 433.72 Den(Calc)= 1.99 |
| Crystal System: |
Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 41212 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.4(1), 5.54(0.9), 2.859(0.8),2.196(0.7), 1.947(0.6), 3.19(0.6), 2.046(0.5), |
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Physical Properties of Formicaite
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| Cleavage: |
{100} Perfect |
| Color: |
White, Light blue. |
| Density: |
1.9 |
| Diaphaneity: |
Transparent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
1 - Talc |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Formicaite
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| Optical Data: |
Uniaxial (+), w=1.553, e=1.573, bire=0.0200. |
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Calculated Properties of Formicaite
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| Electron Density: |
Bulk Density (Electron Density)=2.02 gm/cc
note: Specific Gravity of Formicaite =1.99 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0026851063
Boson Index = 0.9973148937 |
| Photoelectric: |
PEFormicaite = 3.90 barns/electron
U=PEFormicaite x rElectron Density= 7.88 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Formicaite is Not Radioactive |
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Formicaite Classification
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| Dana Class: |
50.02.06.01 (50)Salts of Organic Acids |
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(50.02)(Mellitates, Citrates, Cyanates, and Acetates) |
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(50.02.06)Formicaite Series |
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50.02.06.01 Formicaite! Ca(HCOO)2 P 41212 4 2 2 |
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50.02.06.02 Dashkovaite! Mg(HCOO)2•2(H2O) P 21/c 2/m |
| Strunz Class: |
10.AA.05 10 - ORGANIC COMPOUNDS |
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10.A - Salts of Organic Acids |
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10.AA -Formates, Acetates, etc. |
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10.AA.05 Formicaite! Ca(HCOO)2 P 41212 4 2 2 |
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Other Formicaite Information
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| References: |
NAME( MinRec, Vol 31, No 4) PHYS. PROP.(MinRec, Vol 31, No 4) OPTIC PROP.(MinRec, Vol 31, No 4) |
| See Also: |
Links to other databases for Formicaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Formicaite Specimen Label here :
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Formicaite
Ca(HCOO)2
Dana No: 50.02.06.01 Strunz No: 10.AA.05
Locality:
Notes:
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