Wermlandite Mineral Data (original) (raw)
General Wermlandite Information
(Ca,Mg)Mg7(Al,Fe+++)2(SO4)2(OH)18•12(H2O)
Molecular Weight = 989.11 gm
Calcium 3.04 % Ca 4.25 % CaO
Magnesium 17.82 % Mg 29.54 % MgO
Aluminum 4.09 % Al 7.73 % Al2O3
Iron 2.82 % Fe 4.04 % Fe2O3
Hydrogen 4.28 % H 38.25 % H2O
Sulfur 6.48 % S 16.19 % SO3
Oxygen 61.47 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Ca0.75Mg7.25Al1.5Fe3+0.5(SO4)2(OH)18•12(H2O)
Associated with calcite and magnetite.
Approved IMA 1971
L�ngban mine, Bergslagen ore district, Filipstad, V�rmland (Wermland), Sweden. Link to MinDat.org Location Data.
Named after the locality.
ICSD 30887
PDF 25-153
Wermlandite Image
Wermlandite Crystallography
a:c = 1:2.42609
a = 9.303, c = 22.57, Z = 2; V = 1,691.64 Den(Calc)= 1.94
Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3c1
By Intensity(I/Io): 7.98(1), 11.16(0.7), 4.63(0.5),
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
| | Rius J , Allmann R , Zeitschrift fur Kristallographie , 168 (1984) p.133-144, The superstructure of the double layer mineral wermlandite, [Mg7(Al0.57,Fe3+0.43)2(OH)18]2+[(Ca0.6,Mg0.4)(SO4)2(H2O)12]2-, Locality: Langban, Warmland, Sweden | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Wermlandite
{0001} Perfect
Bluish, Greenish gray.
1.932
Micaceous - Fracture of flexable micaceous cleavage fragments.
Hexagonal - Six-sided crystal shape in cross-section or habit.
Platy - Sheet forms (e.g. micas).
Thin - Flat dimensioned crystals.
1.5 - Between Talc and Gypsum
Optical Properties of Wermlandite
CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2513,KPDmeas= 0.2523,KC= 0.2554
Ncalc = 1.49 - 1.5
Uniaxial (-), e=1.482, w=1.493, bire=0.0110.
Calculated Properties of Wermlandite
Bulk Density (Electron Density)=2.00 gm/cc
note: Specific Gravity of Wermlandite =1.93 gm/cc.
Fermion Index = 0.01
Boson Index = 0.99
PEWermlandite = 2.17 barns/electron
U=PEWermlandite x rElectron Density= 4.34 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wermlandite is Not Radioactive
Wermlandite Classification
31.03.02.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen
(31.03)where (A+ B++)5 (XO4) Zq�x(H2O)
(31.03.02)Dana Group
31.03.02.01 Wermlandite (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18•12(H2O) P 3c1 3 2/m
07.DD.35 07 - SULFATES (SELENATES, TELLURATES)
07.D - Sulfates (selenates, etc.) with additional anions, with H2O
07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
07.DD.35 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43•7(H2O) Unk Hex
07.DD.35 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16•9(H2O) Unk (HEX-R) Trig
07.DD.35 Honessite Ni6Fe2(SO4)(OH)16•4(H2O) R 3m 3 2/m
07.DD.35 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2•n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m
07.DD.35 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3
07.DD.35 Hydrohonessite Ni6Fe2(SO4)(OH)16•7(H2O) Unk Hex
07.DD.35 Motukoreaite Na2Mg38Al24(CO3)13(SO4)8(OH)108•56(H2O) R 3m 3 2/m
07.DD.35 Mountkeithite (Mg,Ni)11(Fe,Cr)3(SO4,CO3)3.5(OH)24•11(H2O) Unk Hex
07.DD.35 Shigaite Mn7Al4(SO4)2(OH)22•8(H2O) R 3 3
07.DD.35 Natroglaucocerinite! (Na,Zn,Cu)10Al6(SO4)3(OH)32•18(H2O)? Unk
07.DD.35 Wermlandite (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18•12(H2O) P 3c1 3 2/m
07.DD.35 Nikischerite! NaFe6Al3(SO4)2(OH)18(H2O)12 R 3 3
07.DD.35 Zincaluminite Zn6Al6(SO4)2(OH)26•5(H2O) Unk Hex
07.DD.35 Woodwardite Cu4Al2(SO4)(OH)12•2-4(H2O) Unk Hex
07.DD.35 Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m
07.DD.35 Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2•n(H2O)],x=0.33,n.0.96 P 3 3
Other Wermlandite Information
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Links to other databases for Wermlandite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Scandinavian mineral gallery
16 - WWW-MINCRYST
Search for Wermlandite using:
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]
Visit our Advertisers for Wermlandite :
A Bijoux Google Search for Wermlandite
Adam's Minerals Google Search for Wermlandite
Cape Minerals Google Search for Wermlandite
Dakota Matrix Minerals Google Search for Wermlandite
Excalibur Mineral Corp. Google Search for Wermlandite
Exceptional Minerals Google Search for Wermlandite
John Betts Fine Minerals Search for Wermlandite
McDougall Minerals Google Search for Wermlandite
Mineral News Website Link
Rock and Mineral Shows Google Search for Wermlandite
Weinrich Minerals, Inc. Google Search for Wermlandite
Ask about Wermlandite 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 Espa�ol
Print or Cut-and-Paste your Wermlandite Specimen Label here :
Wermlandite
(Ca,Mg)Mg7(Al,Fe+++)2(SO4)2(OH)18•12(H2O)
Dana No: 31.03.02.01 Strunz No: 07.DD.35
Locality:
Notes: