Baricite Mineral Data

General Baricite Information

Chemical Formula:

(Mg,Fe++)3(PO4)2•8(H2O)

Composition:

Molecular Weight = 430.64 gm

Magnesium 12.70 % Mg 21.06 % MgO

Iron 9.73 % Fe 12.51 % FeO

Phosphorus 14.39 % P 32.96 % P₂O₅

Hydrogen 3.74 % H 33.47 % H₂O

Oxygen 59.44 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg_2.25Fe²⁺_0.75(PO₄)₂•8(H₂O)

Environment:

Occurs as fracture fillings in sideritic iron formation (Yukon Territory, Canada).

IMA Status:

Approved IMA 1976

Locality:

From the Big Fish River-Rapid Creek area, Yukon Territory, Canada. Link to MinDat.org Location Data.

Name Origin:

Honors Dr. Ljudevit Baric, former Director if the Mineralogical Museum and Professor of Mineralogy, University of Zagreb, Zagreb, Croatia.

Name Pronunciation:

Baricite

Synonym:

ICSD 202099

IMA1975-027

PDF 29-705

Baricite Image

Images:

Baricite

Comments: Blue, micaceous baricite with some yellow iron staining.
Location: Rapid Creek, Yukon Territory, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Baricite Crystallography

Axial Ratios:

a:b:c =0.7509:1:0.3548

Cell Dimensions:

a = 10.075, b = 13.416, c = 4.76, Z = 2; beta = 104.867° V = 621.85 Den(Calc)= 2.30

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 6.71(1), 2.699(0.7), 2.956(0.6),

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

Yakubovich O V , Massa W , Liferovich R P , McCammon C A , The Canadian Mineralogist , 39 (2001) p.1317-1324, The crystal structure of baricite, (Mg1.70Fe1.30)(PO4)2.8H2O

Physical Properties of Baricite

Cleavage:

{010} Perfect

Color:

Colorless, Light blue.

Density:

2.42

Diaphaneity:

Transparent

Hardness:

1.5-2 - Talc-Gypsum

Streak:

white

Optical Properties of Baricite

Gladstone-Dale:

CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.036 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2483,KPDmeas= 0.236,KC= 0.2397
Ncalc = 1.55 - 1.58

Optical Data:

Biaxial (+), a=1.554, b=1.564, g=1.595, bire=0.0410, 2V(Calc)=62, 2V(Meas)=59.

Calculated Properties of Baricite

Electron Density:

Bulk Density (Electron Density)=2.48 gm/cc
note: Specific Gravity of Baricite =2.42 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Baricite= 3.82 barns/electron
U=PE_Baricite x rElectron Density= 9.47 barns/cc.

Radioactivity:

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

Baricite Classification

Dana Class:

40.03.06.02 (40)Hydrated Phosphates, etc

(40.03)where (A++)3 (XO4)2 · x(H2O)

(40.03.06)Vivianite Group

40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m

40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m

40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m

40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m

40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m

40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m

40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m

Strunz Class:

08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CE -With only medium-sized cations, RO4:H2O £ 1:2.5

08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m

08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m

08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None

08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m

08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m

08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 2₁/c 2/m

08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m

08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m

08.CE.40 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m

Other Baricite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Baricite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

Search for Baricite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Baricite :

A Bijoux Google Search for Baricite
Adam's Minerals Google Search for Baricite
Cape Minerals Google Search for Baricite
Dakota Matrix Minerals Google Search for Baricite
Excalibur Mineral Corp. Google Search for Baricite
Exceptional Minerals Google Search for Baricite
John Betts Fine Minerals Search for Baricite
McDougall Minerals Google Search for Baricite
Mineral News Website Link
Rock and Mineral Shows Google Search for Baricite
Weinrich Minerals, Inc. Google Search for Baricite

Ask about Baricite 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 Baricite Specimen Label here :

Baricite

(Mg,Fe++)3(PO4)2•8(H2O)
Dana No: 40.03.06.02 Strunz No: 08.CE.40
Locality:

Notes: