General Corkite Information
|
Chemical Formula: |
PbFe+++3(PO4)(SO4)(OH)6 |
Composition: |
Molecular Weight = 667.82 gm |
| |
Iron 25.09 % Fe 35.87 % Fe2O3 |
| |
Phosphorus 4.64 % P 10.63 % P2O5 |
| |
Hydrogen 0.91 % H 8.09 % H2O |
| |
Lead 31.03 % Pb 33.42 % PbO |
| |
Sulfur 4.80 % S 11.99 % SO3 |
| |
Oxygen 33.54 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
PbFe3+3(PO4)(SO4)(OH)6 |
IMA Status: |
Valid Species (Pre-IMA) 1862 |
Locality: |
Link to MinDat.org Location Data. |
Synonym: |
ICSD 68352 |
| |
PDF 17-471 |
| |
Corkite Image |
Images:
|
|
Corkite Crystallography
|
Axial Ratios: |
a:c = 1:2.30747 |
Cell Dimensions: |
a = 7.22, c = 16.66, Z = 3; V = 752.11 Den(Calc)= 4.42 |
Crystal System: |
Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m |
X Ray Diffraction: |
By Intensity(I/Io): 3.03(1), 5.86(0.65), 2.237(0.55), |
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
|
|
|
Giuseppe G , Tadini C , Neues Jahrbuch fur Mineralogie, Monatshefte , 1987 (1987) p.71-81, Corkite, PbFe3(SO4)(PO4)(OH)6, its crystal structure and ordered, arrangement of the tetrahedral cations, Note: this is the prefered structure of these authors, Locality: Dernbach, Hessen-Nassau, Germany
|
|
| |
Physical Properties of Corkite
|
Cleavage: |
[0001] Perfect |
Color: |
Brownish yellow, Yellow green, Light yellow, Dark green. |
Density: |
4.295 |
Diaphaniety: |
Transparent to Translucent |
Hardness: |
3.5-4.5 - Between Copper Penny and Fluorite-Apatite |
Luster: |
Vitreous - Resinous |
| |
Optical Properties of Corkite
|
Gladstone-Dale: |
CI meas= 0.04 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2104,KPDmeas= 0.2165,KC= 0.2256 |
Optical Data: |
Uniaxial (-), e=1.93, w=1.93, bire=0.0000. |
| |
Calculated Properties of Corkite
|
Electron Density: |
relectron=3.97 gm/cc note: rCorkite =4.30 gm/cc. |
Fermion Index |
Fermion Index = 0.0744 Boson Index = 0.9256 |
Photoelectric: |
PECorkite = 523.15 barns/electron U=PECorkite x relectron=2,079.30 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Corkite is Not Radioactive |
| |
Corkite Classification
|
Dana Class: |
43.4.1.2 (43)Compound Phosphates, etc. |
| |
(43.4)(Anhydrous Compound Anions With Hydroxyl or Halogen) |
| |
(43.4.1)Dana Group |
| |
43.4.1.1 Beudantite PbFe3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.2 Corkite PbFe3(PO4)(SO4)(OH)6 R 3m 3m |
| |
43.4.1.3 Hidalgoite PbAl3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.4 Orpheite PbAl3(PO4,SO4)2(OH)6(?) R 3m 3 2/m |
| |
43.4.1.5 Hinsdalite (Pb,Sr)Al3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.6 Svanbergite SrAl3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.7 Kemmlitzite (Sr,Ce)Al3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.8 Woodhouseite CaAl3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
43.4.1.9 Weilerite BaAl3H[(As,P)O4]2(OH)6 R 3m 3 2/m |
| |
43.4.1.10 Gallobeudantite! PbGa3[(AsO4),(SO4)]2(OH)6 R 3m 3m |
Strunz Class: |
VII/B.35-80 VII - Phosphates, Arsenates and Vanadates |
| |
VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O, OH. cations of medium and big size: Mg, Cu, Zn, and Ca, Na, K, Ba, Pb |
| |
VII/B.35 - Beudantite group |
| |
VII/B.35-10 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m |
| |
VII/B.35-20 Woodhouseite CaAl3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
VII/B.35-30 Svanbergite SrAl3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
VII/B.35-40 Kemmlitzite (Sr,Ce)Al3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
VII/B.35-60 Hinsdalite (Pb,Sr)Al3(PO4)(SO4)(OH)6 R 3m 3 2/m |
| |
VII/B.35-65 Orpheite PbAl3(PO4,SO4)2(OH)6(?) R 3m 3 2/m |
| |
VII/B.35-70 Hidalgoite PbAl3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
VII/B.35-75 Gallobeudantite! PbGa3[(AsO4),(SO4)]2(OH)6 R 3m 3m |
| |
VII/B.35-80 Corkite PbFe3(PO4)(SO4)(OH)6 R 3m 3m |
| |
VII/B.35-90 Beudantite PbFe3(AsO4)(SO4)(OH)6 R 3m 3 2/m |
| |
Other Corkite 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 Corkite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - Crocoite.com Mineral Locations
4 - EUROmin Project
5 -Google Images
6 -Google Scholar
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 Corkite using:
[ALTAVISTA]
[AOL]
[About.com]
[All-The-Web]
[HotBot]
[Ixquick]
[LookSmart]
[MAMMA]
[MSN.COM]
[Netscape]
[Teoma]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Corkite :
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 Corkite Mineral Data :
Ask about Corkite 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 Corkite Specimen Label here :
|
Corkite
PbFe+++3(PO4)(SO4)(OH)6
Dana No: 43.4.1.2 Strunz No: VII/B.35-80
Locality:
Notes:
|
|
| |
| |
|
| |