Brazilianite Mineral Data + Say BRAZILIANITE


[Localities] [Carat Weight] [Special Collections] [Diamond Lots] [Ordering Info]
See Also: [Excalibur Minerals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Special Collections of Rough Diamonds for Researchers and Collectors
Unparalled diversity of specimens from different locations

General Brazilianite Information

Help on Chemical  Formula: Chemical Formula: NaAl3(PO4)2(OH)4
Help on Composition: Composition: Molecular Weight = 361.91 gm
   Sodium       6.35 %  Na    8.56 % Na2O
   Aluminum    22.37 %  Al   42.26 % Al2O3
   Phosphorus  17.12 %  P    39.22 % P2O5
   Hydrogen     1.11 %  H     9.96 % H2O
   Oxygen      53.05 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaAl3(PO4)2(OH)4
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1945
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its first discovery in Brazil.
Help on Synonym: Synonym: ICSD 2086
  PDF 42-1354
 

Brazilianite Image

Click Here for Larger Brazilianite Image in a New Browser Window Images:
Click Here for Larger Brazilianite Image

Brazilianite

Comments: Gemmy brazilianite crystal.
Location: Marcel Telirio mine, Divino das Laranjeiras, Minas Gerais, Brazil. Scale: Size Not Given.
© Fabre Minerals

Brazilianite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1101:1:0.7003
Help on Cell Dimensions: Cell Dimensions: a = 11.19, b = 10.08, c = 7.06, Z = 4; beta = 97.367° V = 789.76 Den(Calc)= 3.04
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.05(1), 2.74(0.8), 2.99(0.8),
Help on Forms: Forms:

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

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

Help on Above

Forms: [ 3 0 1] [ 1 1 0] [ 0 1 0] [ 1 2 1] [ 1 0 1] [ 2 1 0] [ 1 0 0] [ 1 1 1] [ 0 1 1] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Click Here for Large Brazilianite Structure Window 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


Gatehouse B M , Miskin B K , Acta Crystallographica, Section B , 30 (1974) p.1311-1317, The crystal structure of brazilianite, NaAl3(PO4)2(OH)4, Locality: Corrego Frio pegmatite, Minas Gerais, Brazil

 

Physical Properties of Brazilianite

Help on Cleavage: Cleavage: [010] Good
Help on Color: Color: Colorless, Greenish yellow, Yellow green, Light yellow.
Help on Density: Density: 2.98
Help on Diaphaniety: Diaphaniety: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Brazilianite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.201,KPDmeas= 0.205,KC= 0.2094
Help on Optical Data: Optical Data: Biaxial (+), a=1.602, b=1.609, g=1.621-1.623, bire=0.0190-0.0210, 2V(Calc)=72-76, 2V(Meas)=71-75.
 

Calculated Properties of Brazilianite

Help on Electron Density: Electron Density:

relectron=2.96 gm/cc
note: rBrazilianite =2.98 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00025
Boson Index = 0.99975
Help on Photoelectric: Photoelectric:

PEBrazilianite = 1.59 barns/electron
U=PEBrazilianite x relectron= 4.72 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Brazilianite is Not Radioactive

 

Brazilianite Classification

Help on  Dana Class: Dana Class: 41.5.7.1 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.5)where (A B)2 (XO4) Zq
  (41.5.7)Dana Group
 
41.5.7.1 Brazilianite NaAl3(PO4)2(OH)4 P 21/n 2/m
Help on  Strunz Class: Strunz Class: VII/B.12-10 VII - Phosphates, Arsenates and Vanadates
  VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O,OH, cations of medium size: Mg, Mn, Fe, Cu, Zn, Pseudomalachite group and related compounds
  VII/B.12 - Pseudomalachite group, Brazilianite - Viitaniemiite series
 
VII/B.12-10 Brazilianite NaAl3(PO4)2(OH)4 P 21/n 2/m
 
VII/B.12-20 Augelite Al2(PO4)(OH)3 C 2/m 2/m
 
VII/B.12-30 Viitaniemiite Na(Ca,Mn)Al(PO4)(F,OH)3 P 21,P 21/m Mono
 

Other Brazilianite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Brazilianite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Tradeshop.com - The Rainbow of Gems 14 - WWW-MINCRYST 15 -École des Mines de Paris

Search for Brazilianite using:

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

Visit our Advertisers for Brazilianite :
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 Brazilianite Mineral Data :

Ask about Brazilianite 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 Brazilianite Specimen Label here :

Brazilianite

NaAl3(PO4)2(OH)4
Dana No: 41.5.7.1 Strunz No: VII/B.12-10
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links