Girdite Mineral Data + 
|
[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop
- 33.3.3.1 Girdite Pb3H2(TeO3)(TeO6) Unk Mono
- IV/K.19-10 Girdite Pb3H2(TeO3)(TeO6) Unk Mono
- IV/K.19-20 Oboyerite Pb6H6(TeO3)3(TeO6)2·2(H2O) P1 or P1 Tri
- IV/K.19-30 Eztlite Pb2Fe6(TeO3)3(TeO6)(OH)10·8(H2O) Unk Mono
General Girdite Information |
|||
 Chemical Formula: |
Pb3H2(Te++++O3)(Te++++++O6) | ||
| Composition: |
Molecular Weight = 1,022.81 gm | ||
| Tellurium 24.95 % Te 31.21 % TeO2 | |||
| Hydrogen 0.20 % H 1.76 % H2O | |||
| Lead 60.77 % Pb 65.47 % PbO | |||
| Oxygen 14.08 % O | |||
| ______ ______ | |||
| 100.00 % 98.44 % = TOTAL OXIDE | |||
| Empirical Formula: |
Pb3H2(TeO3)(TeO6) | ||
| Environment: |
Secondary tellurate. | ||
| IMA Status: |
Approved IMA 1979 | ||
| Locality: |
Grand Central mine, Tombstone, Arizona, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Richard Gird (1836-1910), mining engineer and assayer, who made the first rich silver assays and helped open up the Tombstone district. | ||
Girdite Image | |||
|
Images:
|
|
||
Girdite Crystallography |
|||
| Axial Ratios: |
a:b:c =1.0976:1:1.5334 | ||
| Cell Dimensions: |
a = 6.241, b = 5.686, c = 8.719, Z = 1; beta = 91.683° V = 309.27 Den(Calc)= 5.49 | ||
| Crystal System: |
MonoclinicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.054(1), 1.765(0.8), 2.842(0.8), | ||
Physical Properties of Girdite |
|||
| Color: |
White, Lemon white. | ||
| Density: |
5.5 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Tough - Difficult to break apart as shown by fibrous minerals and most metals. | ||
| Habit: |
Spherical - Spherical, rounded aggregates. | ||
| Hardness: |
2 - Gypsum | ||
| Luminescence: |
Non-fluorescent. | ||
| Streak: |
white | ||
Optical Properties of Girdite |
|||
| Gladstone-Dale: |
CI meas= -0.708 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.711 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2665,KPDmeas= 0.2661,KC= 0.1558 |
||
| Optical Data: |
Biaxial (-), a=2.44, b=2.47, g=2.48, bire=0.0400, 2V(Calc)=58, 2V(Meas)=70. Dispersion r > v strong. | ||
Calculated Properties of Girdite |
|||
| Electron Density: |
relectron=4.56 gm/cc |
||
| Fermion Index |
Fermion Index = 0.15431 Boson Index = 0.84569 |
||
| Photoelectric: |
PEGirdite =1,217.60 barns/electron |
||
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Girdite is Not Radioactive |
||
Girdite Classification |
|||
| Dana Class: |
33.3.3.1 (33)Selenates and Tellurates | ||
| (33.3)with other anion groups | |||
| (33.3.3)Dana Group | |||
| Strunz Class: |
IV/K.19-10 IV - Oxides | ||
| IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups | |||
| IV/K.19 - Girdite - Eztlite series | |||
Other Girdite Information |
|||
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Girdite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Girdite using: Visit our Advertisers for Girdite : Translate Girdite Mineral Data : Ask about Girdite here : Print or Cut-and-Paste your Girdite Specimen Label here :
|
||
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |