Natrofairchildite Mineral Data

Natrofairchildite Mineral Data
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General Natrofairchildite Information

Help on Chemical Formula: Chemical Formula: Na2Ca(CO3)2
Help on Composition: Composition: Molecular Weight = 206.08 gm
   Sodium   22.31 %  Na   30.08 % Na2O
   Calcium  19.45 %  Ca   27.21 % CaO
   Carbon   11.66 %  C    42.71 % CO2
   Oxygen   46.58 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2Ca(CO3)2
Help on Environment: Environment: Found in burbankite-calcite veins. Nyerereite (1968) has priority over natrofairchildite (1971) even though the 1968 article was just an abstract.
Help on IMA Status: IMA Status: Approved IMA 1971
Help on Locality: Locality: Vuori-Jarvi massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Na analog of fairchildite.
Help on Name Pronunciation: Name Pronunciation: Natrofairchildite + Pronunciation Say NATROFAIRCHILDITE
 

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Natrofairchildite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.4982
Help on Cell Dimensions: Cell Dimensions: a = 5.291, c = 13.218, Z = 2; V = 320.46 Den(Calc)= 2.14
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.67(1), 2.64(0.9), 6.71(0.6),
 

Physical Properties of Natrofairchildite

Help on Cleavage: Cleavage: {0001} Distinct
Help on Color: Color: White.
Help on Density: Density: 2.541
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Fan Shaped - Occurs as radiating crystals shaped like a fan.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=orange, Long UV=orange.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Natrofairchildite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.125 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2299,KPDmeas= 0.1936,KC= 0.2044
Ncalc = 1.44 - 1.52
Help on Optical Data: Optical Data: Uniaxial (-), e=1.459, w=1.525, bire=0.0660.
 

Calculated Properties of Natrofairchildite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Natrofairchildite =2.54 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0017684043
Boson Index = 0.9982315957
Help on Photoelectric: Photoelectric: PENatrofairchildite = 2.90 barns/electron
U=PENatrofairchildite x rElectron Density= 7.29 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Natrofairchildite is Not Radioactive
 

Natrofairchildite Classification
Help on Dana Class: Dana Class: 14.03.05.01 (14)Anhydrous Carbonates
  (14.03)with Compound Formula A+2 B++ (CO3)2
  (14.03.05)Dana Group
 
14.03.05.01 Natrofairchildite Na2Ca(CO3)2 P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: 05.AC.10 05 - CARBONATES (NITRATES)
  05.A - Carbonates without additional anions, without H2O
  05.AC -Alkali and alkali-earth carbonates
 
05.AC.10 Nyerereite Na2Ca(CO3)2 C mc21 mm2
 
05.AC.10 Natrofairchildite Na2Ca(CO3)2 P 63/mmc 6/m 2/m 2/m
 
05.AC.10 Zemkorite (Na,K)2Ca(CO3)2 P 63/mmc, P 63mc, P 62c- Hex
 

Other Natrofairchildite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Natrofairchildite :
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 Natrofairchildite Specimen Label here :

Natrofairchildite

Na2Ca(CO3)2
Dana No: 14.03.05.01 Strunz No: 05.AC.10
Locality:

 

Notes: