Natrophilite Mineral Data

Natrophilite Mineral Data +

[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Natrophilite Information

Chemical Formula:

NaMnPO4

Composition:

Molecular Weight = 172.90 gm

Sodium 13.30 % Na 17.92 % Na₂O

Manganese 31.77 % Mn 41.03 % MnO

Phosphorus 17.91 % P 41.05 % P₂O₅

Oxygen 37.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaMn²⁺(PO₄)

IMA Status:

Valid Species (Pre-IMA) 1890

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 201771

PDF 25-846

Search for Natrophilite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Natrophilite Crystallography

Axial Ratios:

a:b:c =2.106:1:1.258

Cell Dimensions:

a = 10.53, b = 5, c = 6.29, Z = 4; V = 331.17 Den(Calc)= 3.47

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnam

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

By Intensity(I/I_o): 2.72(1), 2.6(0.8), 3.72(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Moore P B , American Mineralogist , 57 (1972) p.1333-1344, Natrophilite, NaMn(PO4), has ordered cations

Physical Properties of Natrophilite

Cleavage:

[100] Good, [010] Indistinct

Color:

Yellow.

Density:

3.41

Diaphaniety:

Transparent to Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

4.5-5 - Near Apatite

Luminescence:

Non-fluorescent.

Luster:

Resinous

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Natrophilite

Gladstone-Dale:

CI meas= -0.044 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1949,KPDmeas= 0.1983,KC= 0.19

Optical Data:

Biaxial (+), a=1.671, b=1.674, g=1.684, bire=0.0130, 2V(Calc)=58, 2V(Meas)=75. Dispersion relatively strong.

Calculated Properties of Natrophilite

Electron Density:

r_electron=3.33 gm/cc
note: r_Natrophilite=3.47 gm/cc.

Fermion Index

Fermion Index = 0.00017
Boson Index = 0.99983

Photoelectric:

PE_Natrophilite= 9.25 barns/electron
U=PE_Natrophilite x r_electron= 30.81 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Natrophilite is Not Radioactive

Natrophilite Classification

Dana Class:

38.1.1.3 (38)Anhydrous Phosphates, etc

(38.1)A+ B++ XO4

(38.1.1)Dana Group

38.1.1.1 Triphylite LiFePO4 Pbnm 2/m 2/m 2/m

38.1.1.2 Lithiophilite LiMnPO4 Pmnb 2/m 2/m 2/m

38.1.1.3 Natrophilite NaMnPO4 Pnam 2/m 2/m 2/m

Strunz Class:

VII/A.02-80 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions. cations of medium size: Mostly Fe, Mn

VII/A.02 - Simferrite - Natrophilite series

VII/A.02-05 Simferite Li(Mg,Fe,Mn)2(PO4)2 Pbnm,Pbn21 Ortho

VII/A.02-10 Triphylite LiFePO4 Pbnm 2/m 2/m 2/m

VII/A.02-20 Lithiophilite LiMnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-30 Ferrisicklerite Li(Fe,Mn)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-40 Sicklerite Li(Mn,Fe)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-50 Heterosite FePO4 Pmnb 2/m 2/m 2/m

VII/A.02-60 Purpurite MnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-70 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

VII/A.02-80 Natrophilite NaMnPO4 Pnam 2/m 2/m 2/m

Other Natrophilite Information

References:

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

See Also:

Links to other databases for Natrophilite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Natrophilite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Natrophilite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Natrophilite Mineral Data :

Ask about Natrophilite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Natrophilite

NaMnPO4
Dana No: 38.1.1.3 Strunz No: VII/A.02-80
Locality:

Notes: