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Nesquehonite Mineral Data

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General Nesquehonite Information

Help on Chemical  Formula: Chemical Formula: Mg(HCO3)(OH)•2(H2O)
Help on Composition: Composition: Molecular Weight = 138.36 gm
   Magnesium  17.57 %  Mg   29.13 % MgO
   Hydrogen    4.37 %  H    39.06 % H2O
   Carbon      8.68 %  C    31.81 % CO2
   Oxygen     69.38 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg(HCO3)(OH)•2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1890
Help on Locality: Locality: Coal mine at Nesquehoning, Carbon Co., Pennsylvania, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Nesquehonite + Pronunciation Say NESQUEHONITE
Help on Synonym: Synonym: ICSD 2758
  PDF 20-669

Nesquehonite Image

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Comments: Scanning electron micrographs of nesquehonite clusters showing the typical elongated habit. (AmMin, 88:1882).
Location: Crystals associated with the remains of a saguaro, Carnegiea gigantea from south and west central Arizona. Scale: Scale Bar 50 µ-m (lower left).
© American Mineralogist

Nesquehonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.2263:1:1.4248
Help on Cell Dimensions: Cell Dimensions: a = 12, b = 5.39, c = 7.68, Z = 4; beta = 90.45° V = 496.73 Den(Calc)= 1.85
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.5(1), 3.86(0.9), 2.61(0.7),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 0) ( 1 1 0) ( 0 1 2) ( 0 0 1)

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Physical Properties of Nesquehonite

Help on Cleavage: Cleavage: {110} Perfect, {001} Imperfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 1.83 - 1.85, Average = 1.84
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white

Optical Properties of Nesquehonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2593,KPDmeas= 0.2607,KC= 0.2582
Ncalc = 1.47 - 1.48
Help on Optical Data: Optical Data: Biaxial (-), a=1.412, b=1.501, g=1.526, bire=0.1140

Calculated Properties of Nesquehonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.93 gm/cc
note: Specific Gravity of Nesquehonite =1.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENesquehonite = 0.63 barns/electron
U=PENesquehonite x rElectron Density= 1.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nesquehonite is Not Radioactive

Nesquehonite Classification

Help on  Dana Class: Dana Class: (13)Acid Carbonates
  (13.01)with miscellaneous formulae
  (13.01.05)Dana Group Nesquehonite Mg(HCO3)(OH)•2(H2O) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 05.CA.05 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CA -With medium-sized cations
05.CA.05 Nesquehonite Mg(HCO3)(OH)•2(H2O) P 21/n 2/m

Other Nesquehonite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Nesquehonite :
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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Dana No: Strunz No: 05.CA.05





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