Beusite Mineral Data

Beusite Mineral Data +

[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions]
Dan Weinrich Fine Minerals
Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows

General Beusite Information

Chemical Formula:

(Mn++,Fe++,Ca,Mg)3(PO4)2

Composition:

Molecular Weight = 344.81 gm

Calcium 3.49 % Ca 4.88 % CaO

Magnesium 1.41 % Mg 2.34 % MgO

Manganese 28.68 % Mn 37.03 % MnO

Iron 11.34 % Fe 14.59 % FeO

Phosphorus 17.97 % P 41.17 % P₂O₅

Oxygen 37.12 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_1.8Fe²⁺_0.7Ca_0.3Mg_0.2(PO₄)₂

Environment:

Late-stage accessory mineral in complex granite pegmatites and as euhedral inclusions in troilite nodules in an iron meteorite.

IMA Status:

Approved IMA 1968

Locality:

Los Aleros pegmatite, Argentina. Link to MinDat.org Location Data.

Name Origin:

Named for Alexey Alexandrovich Beus, Professor of Mineralogy and Geochemistry, Moscow Polytechnical Institute.

Synonym:

ICSD 71051

PDF 36-401

Beusite Image

Images:

Beusite

Comments: Massive pale pinkish-beige beusite with blue vivianite.
Location: Remmelberg, Oberpfalz, Bavaria, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Beusite Crystallography

Axial Ratios:

a:b:c =0.7621:1:0.5338

Cell Dimensions:

a = 8.78, b = 11.52, c = 6.15, Z = 4; beta = 99.42° V = 613.66 Den(Calc)= 3.73

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): 2.863(1), 3.49(1), 2.708(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

Steele I M , Olsen E , Pluth J J , Davis A M , American Mineralogist , 76 (1991) p.1985-1989, Occurrence and crystal structure of Ca-free beusite in the El Sampal IIIA iron, meteorite

View Additional jPOWD Structure files for Beusite
[1]

Physical Properties of Beusite

Cleavage:

[010] Good, [100] Distinct

Color:

Reddish brown.

Density:

3.6 - 3.7, Average = 3.65

Diaphaniety:

Translucent

Habit:

Lamellar - Thin laminae producing a lamellar structure.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

light pink

Optical Properties of Beusite

Gladstone-Dale:

CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1883,KPDmeas= 0.1925,KC= 0.1906

Optical Data:

Biaxial (+), a=1.685-1.708, b=1.688-1.711, g=1.7-1.723, bire=0.0150, 2V(Calc)=54, 2V(Meas)=25. Dispersion r > v strong.

Calculated Properties of Beusite

Electron Density:

r_electron=3.51 gm/cc
note: r_Beusite=3.65 gm/cc.

Fermion Index

Fermion Index = 0.00403
Boson Index = 0.99597

Photoelectric:

PE_Beusite= 12.15 barns/electron
U=PE_Beusite x r_electron= 42.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Beusite is Not Radioactive

Beusite Classification

Dana Class:

38.3.3.2 (38)Anhydrous Phosphates, etc

(38.3)(A+ B++)3 (XO4)2

(38.3.3)Dana Group

38.3.3.1 Graftonite (Fe,Mn,Ca)3(PO4)2 P 2₁/c 2/m

38.3.3.2 Beusite (Mn,Fe,Ca,Mg)3(PO4)2 P 2₁/c 2/m

Strunz Class:

VII/A.04-30 VII - Phosphates, Arsenates and Vanadates

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

VII/A.04 - Sarcopside - Beusite series

VII/A.04-10 Sarcopside (Fe,Mn,Mg)3(PO4)2 P 2₁/a 2/m

VII/A.04-20 Graftonite (Fe,Mn,Ca)3(PO4)2 P 2₁/c 2/m

VII/A.04-30 Beusite (Mn,Fe,Ca,Mg)3(PO4)2 P 2₁/c 2/m

Other Beusite Information

References:

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

See Also:

Links to other databases for Beusite :
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 Beusite using:

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

Visit our Advertisers for Beusite :
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 Beusite Mineral Data :

Ask about Beusite 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 Beusite Specimen Label here :

Beusite

(Mn++,Fe++,Ca,Mg)3(PO4)2
Dana No: 38.3.3.2 Strunz No: VII/A.04-30
Locality:

Notes: