Nahcolite Mineral Data + 
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- 13.1.1.1 Nahcolite NaHCO3 P 21/n 2/m
- V/B.01-10 Zabuyelite Li2CO3 C 2/c 2/m
- V/B.01-20 Nahcolite NaHCO3 P 21/n 2/m
- V/B.01-30 Kalicinite KHCO3 P 21/a 2/m
- V/B.01-40 Teschemacherite (NH4)HCO3 Pccn 2/m 2/m 2/m
- V/B.01-50 Natrite Na2CO3 C 2 or Cm Mono
- V/B.01-60 Wegscheiderite Na5(CO3)(HCO3)3 P1 1
General Nahcolite Information |
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 Chemical Formula: |
NaHCO3 | ||
| Composition: |
Molecular Weight = 84.01 gm | ||
| Sodium 27.37 % Na 36.89 % Na2O | |||
| Hydrogen 1.20 % H 10.72 % H2O | |||
| Carbon 14.30 % C 52.39 % CO2 | |||
| Oxygen 57.14 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na(HCO3) | ||
| Environment: |
Continental evaporite deposits. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1929 | ||
| Locality: |
Searles Lake, San Bernardino County, California, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the nmonic of the chemical formula (NaHCO). | ||
| Synonym: |
Baking soda | ||
| ICSD 18183 | |||
| PDF 15-700 | |||
| Sodium bicarbonate | |||
Nahcolite Image | |||
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Nahcolite Crystallography |
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| Axial Ratios: |
a:b:c =0.7717:1:0.3593 | ||
| Cell Dimensions: |
a = 7.475, b = 9.686, c = 3.481, Z = 4; beta = 93.38° V = 251.60 Den(Calc)= 2.22 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.97(1), 2.6(0.9), 3.08(0.25), | ||
| Forms:
Mouse |
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Physical Properties of Nahcolite |
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| Cleavage: |
[101] Perfect, [111] Good, [100] Distinct | ||
| Color: |
Colorless, White, Gray, Brown, Black. | ||
| Density: |
2.21 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). | ||
| Hardness: |
2.5 - Finger Nail | ||
| Luminescence: |
Fluorescent. | ||
| Luster: |
Vitreous - Resinous | ||
| Streak: |
white | ||
Optical Properties of Nahcolite |
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| Gladstone-Dale: |
CI meas= -0.016 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2197,KPDmeas= 0.2207,KC= 0.2171 |
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| Optical Data: |
Biaxial (-), a=1.377, b=1.503, g=1.583, bire=0.2060 | ||
| Pleochroism (x): |
colorless. | ||
| Pleochroism (y): |
colorless. | ||
| Pleochroism (z): |
colorless. | ||
Calculated Properties of Nahcolite |
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| Electron Density: |
relectron=2.22 gm/cc |
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| Fermion Index |
Fermion Index = 0.00184 Boson Index = 0.99816 |
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| Photoelectric: |
PENahcolite = 0.64 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Nahcolite is Not Radioactive |
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Nahcolite Classification |
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| Dana Class: |
13.1.1.1 (13)Acid Carbonates | ||
| (13.1)with miscellaneous formulae | |||
| (13.1.1)Dana Group | |||
| Strunz Class: |
V/B.01-20 V - Nitrates, Carbonates and Borates | ||
| V/B - Waterfree carbonates [CO3]2- without unfamiliar anions | |||
| V/B.01 - Zabuyelite - Wegscheiderite series | |||
Other Nahcolite 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 Nahcolite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - Crocoite.com Mineral Locations 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Nahcolite using: Visit our Advertisers for Nahcolite : Translate Nahcolite Mineral Data : Ask about Nahcolite here : Print or Cut-and-Paste your Nahcolite Specimen Label here :
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