Wilhelmvierlingite Mineral Data

Wilhelmvierlingite Mineral Data +

[Register] [Auction Rules] [Current Listing] [About Us] [Site Map]
e-Rocks.com, auction and sales venue for all rock and mineral enthusiasts
Our mission is to provide an online centre for Buyers and Sellers with reliable service and support
Brought to you by Thames Valley Minerals

General Wilhelmvierlingite Information

Chemical Formula:

CaMn++Fe+++(PO4)2(OH)·2(H2O)

Composition:

Molecular Weight = 393.84 gm

Calcium 10.18 % Ca 14.24 % CaO

Manganese 13.95 % Mn 18.01 % MnO

Iron 14.18 % Fe 20.27 % Fe₂O₃

Phosphorus 15.73 % P 36.04 % P₂O₅

Hydrogen 1.28 % H 11.44 % H₂O

Oxygen 44.69 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaMn²⁺Fe³⁺(PO₄)₂(OH)·2(H₂O)

Environment:

Found with secondary phosphates in a pegmatite.

IMA Status:

Approved IMA 1983

Locality:

Hagendorf pegmatite, Bavaria, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for William Vierling (1901-1995), Weiden, Bavaria, Germany.

Wilhelmvierlingite Image

Images:

Click Here for Larger Wilhelmvierlingite Image

Wilhelmvierlingite Rockbridgeite

Comments: Yellow brown crystals wilhelmvierlingite with black rockbridgeite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrau?, Oberpfalz, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Wilhelmvierlingite Crystallography

Axial Ratios:

a:b:c =0.8:1:0.3951

Cell Dimensions:

a = 14.8, b = 18.5, c = 7.31, Z = 8; V = 2,001.48 Den(Calc)= 2.61

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/I_o): 2.86(1), 9.34(0.7), 5(0.6),

Physical Properties of Wilhelmvierlingite

Cleavage:

[010] Perfect

Color:

Brownish yellow, Yellow.

Density:

2.58

Diaphaniety:

Transparent to Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Wilhelmvierlingite

Gladstone-Dale:

CI meas= -0.1 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.087 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2545,KPDmeas= 0.2575,KC= 0.2341

Optical Data:

Biaxial (-), a=1.637, b=1.664, g=1.692, bire=0.0550

Pleochroism (x):

light yellow.

Pleochroism (y):

light yellow.

Pleochroism (z):

dark yellow.

Calculated Properties of Wilhelmvierlingite

Electron Density:

r_electron=2.57 gm/cc
note: r_{Wilhelmvierlingite}=2.61 gm/cc.

Fermion Index

Fermion Index = 0.00335
Boson Index = 0.99665

Photoelectric:

PE_{Wilhelmvierlingite}= 9.74 barns/electron
U=PE_{Wilhelmvierlingite} x r_electron= 25.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wilhelmvierlingite is Not Radioactive

Wilhelmvierlingite Classification

Dana Class:

42.11.1.5 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.1)Dana Group

42.11.1.1 Overite CaMgAl(PO4)2(OH)·4(H2O) Pcca 2/m 2/m 2/m

42.11.1.2 Segelerite CaMgFe(PO4)2(OH)·4(H2O) Pcca 2/m 2/m 2/m

42.11.1.3 Manganosegelerite (Mn,Ca)(Mn,Fe,Mg)Fe(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

42.11.1.4 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

42.11.1.5 Wilhelmvierlingite CaMnFe(PO4)2(OH)·2(H2O) P bca 2/m 2/m 2/m

42.11.1.6 Kaluginite* (Mn,Ca)MgFe(PO4)2(OH)·4(H2O) C cca 2/m 2/m 2/m

42.11.1.7 Juonniite! CaMgSc(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

Strunz Class:

VII/D.28-30 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.28 - Overite- Segelerite group

VII/D.28-10 Overite CaMgAl(PO4)2(OH)·4(H2O) Pcca 2/m 2/m 2/m

VII/D.28-20 Segelerite CaMgFe(PO4)2(OH)·4(H2O) Pcca 2/m 2/m 2/m

VII/D.28-25 Juonniite! CaMgSc(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

VII/D.28-30 Wilhelmvierlingite CaMnFe(PO4)2(OH)·2(H2O) P bca 2/m 2/m 2/m

VII/D.28-40 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

VII/D.28-50 Manganosegelerite (Mn,Ca)(Mn,Fe,Mg)Fe(PO4)2(OH)·4(H2O) P bca 2/m 2/m 2/m

Other Wilhelmvierlingite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Wilhelmvierlingite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 -École des Mines de Paris

Search for Wilhelmvierlingite using:

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

Visit our Advertisers for Wilhelmvierlingite :
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 Wilhelmvierlingite Mineral Data :

Ask about Wilhelmvierlingite 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 Wilhelmvierlingite Specimen Label here :

Wilhelmvierlingite

CaMn++Fe+++(PO4)2(OH)·2(H2O)
Dana No: 42.11.1.5 Strunz No: VII/D.28-30
Locality:

Notes: