Thermonatrite Mineral Data

General Thermonatrite Information

Chemical Formula:

Na2CO3•(H2O)

Composition:

Molecular Weight = 124.00 gm

Sodium 37.08 % Na 49.98 % Na₂O

Hydrogen 1.63 % H 14.53 % H₂O

Carbon 9.69 % C 35.49 % CO₂

Oxygen 51.61 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₂(CO₃)•(H₂O)

Environment:

Dry lakes in arid regions.

IMA Status:

Valid Species (Pre-IMA) 1845

Locality:

Vesuvius, Campania, Italy. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for heat and natron, as the dehydration product from heating natron.

Name Pronunciation:

Thermonatrite + Pronunciation

Synonym:

ICSD 6293

PDF 8-448

Thermonatrite Image

Images:

Click Here for Larger Thermonatrite Image

Thermonatrite Nacaphite

Comments: Sparse pale yellow-brown microcrystal and crystalline nacaphite with white thermonatrite on a dark matrix.
Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Thermonatrite

Comments: Granular thermonatrite.
Location: Eruption of 1859, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thermonatrite Crystallography

Axial Ratios:

a:b:c =2.0422:1:1.2324

Cell Dimensions:

a = 10.72, b = 5.249, c = 6.469, Z = 4; V = 364.01 Den(Calc)= 2.26

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P ca2₁

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

By Intensity(I/I_o): 2.768(1), 2.372(0.6), 2.753(0.55),

Crystal Structure:

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Wu K K , Brown I D , Acta Crystallographica, Section B , 31 (1975) p.890-892, A neutron diffraction study of Na2CO3*H2O, Locality: synthetic

Physical Properties of Thermonatrite

Cleavage:

{100} Indistinct

Color:

Colorless, Grayish yellow, Grayish, Yellowish, White.

Density:

2.255

Diaphaneity:

Transparent to translucent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Hardness:

1 - Talc

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Thermonatrite

Gladstone-Dale:

CI meas= 0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2139,KPDmeas= 0.2143,KC= 0.2192
Ncalc = 1.49 - 1.5

Optical Data:

Biaxial (-), a=1.42, b=1.506, g=1.524, bire=0.1040, 2V(Calc)=46, 2V(Meas)=48.

Calculated Properties of Thermonatrite

Electron Density:

Bulk Density (Electron Density)=2.25 gm/cc
note: Specific Gravity of Thermonatrite =2.26 gm/cc.

Fermion Index:

Fermion Index = 0.0013156205
Boson Index = 0.9986843795

Photoelectric:

PE_{Thermonatrite}= 0.74 barns/electron
U=PE_{Thermonatrite} x rElectron Density= 1.68 barns/cc.

Radioactivity:

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

Thermonatrite Classification

Dana Class:

15.01.01.01 (15)Hydrated Carbonates

(15.01)where A+ (XO3) · x(H2O)

(15.01.01)Dana Group

15.01.01.01 Thermonatrite Na2CO3•(H2O) P ca2₁ mm2

Strunz Class:

05.CB.05 05 - CARBONATES (NITRATES)

05.C - Carbonates without Additional Anions, with H2O

05.CB -With large cations (alkali and alkali-earth carbonates)

05.CB.05 Thermonatrite Na2CO3•(H2O) P ca2₁ mm2

Other Thermonatrite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Thermonatrite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info

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

Thermonatrite

Na2CO3•(H2O)
Dana No: 15.01.01.01 Strunz No: 05.CB.05
Locality:

Notes: