Nitromagnesite Mineral Data

General Nitromagnesite Information

Chemical Formula:

Mg(NO3)2•6(H2O)

Composition:

Molecular Weight = 256.41 gm

Magnesium 9.48 % Mg 15.72 % MgO

Hydrogen 4.72 % H 42.16 % H₂O

Nitrogen 10.93 % N 42.12 % N₂O₅

Oxygen 74.88 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(NO₃)₂•6(H₂O)

Environment:

Cave deposit in humidities up to 78%, typically formed as a leachate of bat guano.

IMA Status:

Valid Species (Pre-IMA) 1835

Locality:

Nicojack Cave, Madison Co., Kentucky, USA. Link to MinDat.org Location Data.

Name Origin:

Named for NITROgen and MAGNESium in the composition.

Name Pronunciation:

Nitromagnesite + Pronunciation

Synonym:

ICSD 23220

PDF 14-101

Nitromagnesite Image

Images:

Nitromagnesite

Comments: Tan crystalline nitromagnesite grain, deliquescent.
Location: Baume, Jura, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nitromagnesite Crystallography

Axial Ratios:

a:b:c =0.4873:1:0.5192

Cell Dimensions:

a = 6.194, b = 12.71, c = 6.6, Z = 2; beta = 93° V = 518.88 Den(Calc)= 1.64

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.295(1), 2.925(0.75), 4.43(0.55),

Crystal Structure:

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Braibanti A , Tiripicchio A , Lanfredi A M M , Bigoli F , Acta Crystallographica, Section B , 35 (1979) p.354-361, The crystal structures of nitrates of divalent hexaquocations. II., Hexaquomagnesium nitrate, Locality: synthetic, Note: z(Wat2) corrected

Physical Properties of Nitromagnesite

Cleavage:

{110} Perfect

Color:

Colorless, White.

Density:

1.58

Diaphaneity:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Nitromagnesite

Gladstone-Dale:

CI meas= -0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2748,KPDmeas= 0.2852,KC= 0.2767
Ncalc = 1.44 - 1.45

Optical Data:

Biaxial (-), a=1.34, b=1.506, g=1.506, bire=0.1660, 2V(Calc)=0, 2V(Meas)=5.

Calculated Properties of Nitromagnesite

Electron Density:

Bulk Density (Electron Density)=1.71 gm/cc
note: Specific Gravity of Nitromagnesite =1.64 gm/cc.

Fermion Index:

Fermion Index = 0.11
Boson Index = 0.89

Photoelectric:

PE_{Nitromagnesite}= 0.52 barns/electron
U=PE_{Nitromagnesite} x rElectron Density= 0.89 barns/cc.

Radioactivity:

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

Nitromagnesite Classification

Dana Class:

18.02.03.01 (18)Simple Nitrates

(18.02)where A (NO3)2 · x(H2O), x can equal zero

(18.02.03)Dana Group

18.02.03.01 Nitromagnesite Mg(NO3)2•6(H2O) P 2₁/c 2/m

Strunz Class:

05.NC.05 05 - CARBONATES (NITRATES)

05.N - NITRATES

05.NC -With H2O

05.NC.05 Nitromagnesite Mg(NO3)2•6(H2O) P 2₁/c 2/m

Other Nitromagnesite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Nitromagnesite :
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 Nitromagnesite Specimen Label here :

Nitromagnesite

Mg(NO3)2•6(H2O)
Dana No: 18.02.03.01 Strunz No: 05.NC.05
Locality:

Notes: