Phurcalite Mineral Data + Say PHURCALITE

Dan Weinrich Auctions
[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com]
Dan Weinrich Auctions
Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens
The Place To Find Great Specimens At Great Prices!

General Phurcalite Information

Help on Chemical  Formula: Chemical Formula: Ca2(UO2)3O2(PO4)2·7(H2O)
Help on Composition: Composition: Molecular Weight = 1,238.29 gm
   Calcium      6.47 %  Ca    9.06 % CaO
   Uranium     57.67 %  U    65.42 % UO2
   Phosphorus   5.00 %  P    11.46 % P2O5
   Hydrogen     1.14 %  H    10.18 % H2O
   Oxygen      29.72 %  O
              ______        ______ 
              100.00 %       96.12 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2(UO2)3O2(PO4)2·7(H2O)
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: ICSD 1687
  PDF 30-285
 

Phurcalite Image

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

Phurcalite

Comments: Yellow phurcalite crystals on white aragonite.
Location: Posey Mine, White Canyon District, San Juan County, Utah, USA. Scale: Picture site 0.5 cm.
© Paul M. Schumacher

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

Phurcalite

Comments: Coatings of minute acicular phurcalite crystals on sandstone.
Location: Posey Mine, Red Canyon, White Canyon District, San Juan County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

Phurcalite

Comments: Bright canary yellow acicular phurcalite crystals to about 0.25mm. Seems to have overgrown perhaps torbernite and individual groups are to 1mm.
Location: El Azul mine, Los Azules district, Copiapo Province, Atacama, Chile. Scale: Picture Size 5 mm.
© Tom Loomis / Dakota Matrix

Phurcalite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.086:1:0.848
Help on Cell Dimensions: Cell Dimensions: a = 17.415, b = 16.035, c = 13.598, Z = 8; V = 3,797.24 Den(Calc)= 4.33
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.05(1), 3.09(0.8), 3.1(0.8),
Click Here for Large Phurcalite 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


Atencio D , Neumann R , Silva A J G C , Mascarenhas Y P , The Canadian Mineralogist , 29 (1991) p.95-105, Phurcalite from Perus, San Paulo, Brazil, and redetermination of its, crystal structure, Locality: Perus, San Paulo, Brazil

 

Physical Properties of Phurcalite

Help on Cleavage: Cleavage: [001] Perfect, [010] Perfect, [100] Good
Help on Color: Color: Yellow.
Help on Density: Density: 4.22
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: yellow white
 

Optical Properties of Phurcalite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.223 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.192 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.167,KPDmeas= 0.1713,KC= 0.14
Help on Optical Data: Optical Data: Biaxial (-), a=1.69, b=1.73, g=1.749, bire=0.0590, 2V(Calc)=66, 2V(Meas)=68.
 

Calculated Properties of Phurcalite

Help on Electron Density: Electron Density:

relectron=3.80 gm/cc
note: rPhurcalite =4.33 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00438
Boson Index = 0.99562
Help on Photoelectric: Photoelectric:

PEPhurcalite =1,490.25 barns/electron
U=PEPhurcalite x relectron=5,669.61 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 4,318,872.77 (Gamma Ray American Petroleum Institute Units)

Phurcalite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 7.04 ± 1.76 grams of pure Phurcalite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 704.27 ±176.07 grams of pure Phurcalite .

Estimated Radioactivity from Phurcalite - very strong
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.61 cm 103,224,413 2.79E-03 4,318,872.77 1,419.90
100 gm / 3.53 cm 10,322,441 2.79E-04 431,887.28 141.99
10 gm / 1.64 cm 1,032,244 2.79E-05 43,188.73 14.20
1 gm / 7.61 mm 103,224 2.79E-06 4,318.87 1.42
0.1 gm / 3.53 mm 10,322 2.79E-07 431.89 0.14
0.01 gm / 1.64 mm 1,032 2.79E-08 43.19 0.01
0.001 gm / 0.76 mm 103 2.79E-09 4.32 0.00

Weight of pure Phurcalite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.33 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
 

Phurcalite Classification

Help on  Dana Class: Dana Class: 42.4.7.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.4)where (AB)5 (XO4)2 Zq · x(H2O)
  (42.4.7)Dana Group
 
42.4.7.1 Phurcalite Ca2(UO2)3O2(PO4)2·7(H2O) P bca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: VII/E.07-40 VII - Phosphates, Arsenates and Vanadates
  VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-
  VII/E.07 - Phosphuranylite series
 
VII/E.07-10 Phuralumite Al2(UO2)3(PO4)2(OH)6·10(H2O) P 21/a 2/m
 
VII/E.07-20 Mundite Al(UO2)3(PO4)2(OH)3·5(H2O) P 21cn,Pmcn Ortho
 
VII/E.07-25 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O) Bmmb 2/m 2/m 2/m
 
VII/E.07-30 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4·8(H2O) C mcm 2/m 2/m 2/m
 
VII/E.07-40 Phurcalite Ca2(UO2)3O2(PO4)2·7(H2O) P bca 2/m 2/m 2/m
 
VII/E.07-50 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4·6(H2O) Bmmb 2/m 2/m 2/m
 
VII/E.07-60 Bergenite Ca2Ba4[(UO3)2O2(PO4)2]3(H2O)16 P 21/c 2/m
 
VII/E.07-70 Francoisite-(Nd) (Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)·6(H2O) P 21/c 2/m
 
VII/E.07-80 Dewindtite Pb3[H(UO2)3O2(PO4)2]2·12(H2O) Bmmb 2/m 2/m 2/m
 
VII/E.07-90 Dumontite Pb2(UO2)3O2(PO4)2·5(H2O) P 21/m 2/m
 
VII/E.07-100 Hugelite Pb2(UO2)3(AsO4)2(OH)4·3(H2O) P 21/m 2/m
 
VII/E.07-110 Kamitugaite PbAl(UO2)5(PO4)2(OH)9·9.5(H2O) P1,P 1 Tri
 
VII/E.07-120 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O) Unk Ortho
 
VII/E.07-130 Althupite ThAl(UO2)7(PO4)4(OH)5·15(H2O) P1 1
 
VII/E.07-140 Vanmeersscheite U(UO2)3(PO4)2(OH)6·4(H2O) P mn21 mm2
 
VII/E.07-150 Metavanmeersscheite U(UO2)3(PO4)2(OH)6·2(H2O) F dd2 mm2
 

Other Phurcalite Information

Help on References: References: 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 Phurcalite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Uranium Minerals 14 - WWW-MINCRYST 15 -École des Mines de Paris

Search for Phurcalite using:

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

Visit our Advertisers for Phurcalite :

AA Mineral Specimens
B & L Fine Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
Heliodor
John Betts Fine Minerals
Mason's Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz
T G Fine Minerals
Wrights Rock Shop

Translate Phurcalite Mineral Data :

Ask about Phurcalite 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 Phurcalite Specimen Label here :

Phurcalite

Ca2(UO2)3O2(PO4)2·7(H2O)
Dana No: 42.4.7.1 Strunz No: VII/E.07-40
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