Hydrotungstite 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
- 49.1.1.1 Hydrotungstite H2WO4·(H2O) P 2/m 2/m
- IV/E.02-10 Tungstite WO3·(H2O) Pmnb 2/m 2/m 2/m
- IV/E.02-20 Meymacite WO3·2(H2O) None
- IV/E.02-30 Hydrotungstite H2WO4·(H2O) P 2/m 2/m
- IV/E.02-40 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic
- IV/E.02-50 Anthoinite AlWO3(OH)3 P1 or P1 Tri
- IV/E.02-60 Mpororoite Al(WO3)(OH)3·2(H2O) P1 or P1 Tri
- IV/E.02-70 Yttrotungstite-(Y) YW2O6(OH)3 P 21/m 2/m
- IV/E.02-75 Yttrotungstite-(Ce)! (Ce,Nd,Y)W2O6(OH)3 P 21/m 2/m
- IV/E.02-80 Cerotungstite-(Ce) CeW2O6(OH)3 P 21/m 2/m
General Hydrotungstite Information |
|||
 Chemical Formula: |
H2WO4·(H2O) | ||
| Composition: |
Molecular Weight = 267.88 gm | ||
| Hydrogen 1.51 % H 13.45 % H2O | |||
| Tungsten 68.63 % W 86.55 % WO3 | |||
| Oxygen 29.86 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
H2(WO4)·(H2O) | ||
| IMA Status: |
Valid Species (Pre-IMA) 1944 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
Hydrotungstite Image | |||
|
Images:
|
|
||
Hydrotungstite Crystallography |
|||
| Axial Ratios: |
a:b:c =1.0765:1:0.5375 | ||
| Cell Dimensions: |
a = 7.45, b = 6.92, c = 3.72, Z = 2; beta = 90.5° V = 191.77 Den(Calc)= 4.64 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 6.96(1), 3.26(0.4), 3.31(0.4), | ||
Physical Properties of Hydrotungstite |
|||
| Cleavage: |
[010] Indistinct | ||
| Color: |
Yellow green, Dark green. | ||
| Density: |
4.6 | ||
| Hardness: |
2 - Gypsum | ||
| Luster: |
Vitreous - Dull | ||
| Streak: |
greenish yellow | ||
Optical Properties of Hydrotungstite |
|||
| Gladstone-Dale: |
CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1932,KPDmeas= 0.1949,KC= 0.1937 |
||
| Optical Data: |
Biaxial (-), a=1.7, b=1.95, g=2.04, bire=0.3400, 2V(Calc)=54, 2V(Meas)=52. | ||
Calculated Properties of Hydrotungstite |
|||
| Electron Density: |
relectron=4.09 gm/cc |
||
| Fermion Index |
Fermion Index = 0.09815 Boson Index = 0.90185 |
||
| Photoelectric: |
PEHydrotungstite = 840.62 barns/electron |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hydrotungstite is Not Radioactive |
||
Hydrotungstite Classification |
|||
| Dana Class: |
49.1.1.1 (49)Basic and Hydrated Molybdates and Tungstates | ||
| (49.1)(Acid Hydrated) | |||
| (49.1.1)Dana Group | |||
| Strunz Class: |
IV/E.02-30 IV - Oxides | ||
| IV/E - Oxides with metal : oxygen < 1:2 (M2O5, MO3) | |||
| IV/E.02 - Tungstite - Cerotungstite-(Ce) series | |||
Other Hydrotungstite 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 Hydrotungstite : 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 -École des Mines de Paris Search for Hydrotungstite using: Visit our Advertisers for Hydrotungstite : Translate Hydrotungstite Mineral Data : Ask about Hydrotungstite here : Print or Cut-and-Paste your Hydrotungstite Specimen Label here :
|
||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |