Martyite
A valid IMA mineral species
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About Martyite
Joe Marty
Formula:
Zn3(V2O7)(OH)2 · 2H2O
Colour:
pale orange yellow
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
3.37
Crystal System:
Trigonal
Member of:
Name:
Named for Mr. Joe Marty (1945- ), American medical technologist, mineral collector/micromounter, and member of the micromounters hall of fame, in recognition for his contributions to mineralogy. Joe has discovered (or contributed to the discovery of) dozens of new minerals, including martyite.
Unique Identifiers
Mindat ID:
32207
Long-form identifier:
mindat:1:1:32207:8
Similar Names
IMA Classification of Martyite
Classification of Martyite
8.FD.05
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
D : Polyphosphates, etc., with OH and H2O
8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
D : Polyphosphates, etc., with OH and H2O
40.3.10.2
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Myi | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Martyite
Adamantine
Transparency:
Transparent
Colour:
Pale orange yellow
Hardness:
3 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
perfect on {001} and good on {110}
perfect on {001} and good on {110}
Comment:
thin flakes slightly flexible, coarser plates brittle with a curved fracture
Density:
3.37(3) g/cm3 (Measured) 3.375 g/cm3 (Calculated)
Optical Data of Martyite
Type:
Uniaxial (+)
RI values:
nω = 1.793(3) nε = 1.806(3)
Max. Birefringence:
δ = 0.013
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
O (red-orange) >> E (yellow)
Chemistry of Martyite
Mindat Formula:
Zn3(V2O7)(OH)2 · 2H2O
Element Weights:
Elements listed:
Crystallography of Martyite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 6.0818 Å, c = 7.1793 Å
Ratio:
a:c = 1 : 1.18
Unit Cell V:
229.97 ų
Z:
1
Morphology:
thin plates and flakes with {001} prominent. A poorly developed {110} also observed.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006193 | Martyite | Kampf A R, Steele I M (2008) Martyite, a new mineral species related to volborthite: Description and crystal structure The Canadian Mineralogist 46 687-692 |  | 2008 | Blue Cap mine, San Juan County, Utah | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.211 Å | (100) |
| 4.252 Å | (20) |
| 2.968 Å | (50) |
| 2.628 Å | (35) |
| 2.470 Å | (40) |
| 1.773 Å | (20) |
| 1.513 Å | (20) |
| 1.485 Å | (25) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Martyite
General Appearance of Type Material:
a V-U oxide-replacement assemblage developed at the expense of organic material.
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, California, USA (catalog numbers 58610 and 58611).
Associated Minerals at Type Locality:
Synonyms of Martyite
Other Language Names for Martyite
Relationship of Martyite to other Species
Member of:
Other Members of Volborthite Group:
| Karpenkoite | Co3(V2O7)(OH)2 · 2H2O | Trig. 3m (3 2/m) : P3m1 |
| Volborthite | Cu3(V2O7)(OH)2 · 2H2O | Mon. 2/m : B2/m |
Common Associates
Associations Based on Photo Data:
| 1 photo of Martyite associated with Calcite | CaCO3 |
| 1 photo of Martyite associated with Melanovanadite | Ca(V5+,V4+)4O10 · 5H2O |
Related Minerals - Strunz-mindat Grouping
| 8.FD.05 | Volborthite | Cu3(V2O7)(OH)2 · 2H2O |
| 8.FD.05 | Karpenkoite | Co3(V2O7)(OH)2 · 2H2O |
| 8.FD.10 | Vanarsite | NaCa12(As3+V5+8.5V4+3.5As5+6O51)2 · 78H2O |
| 8.FD.10 | Packratite | Ca11(As3+V5+10V4+2As5+6O51)2 · 83H2O |
| 8.FD.10 | Bicapite | [KNa2Mg2(H2O)25][H2PV5+12O40(V5+O)2] |
| 8.FD.10 | Morrisonite | Ca11(As3+V4+2V5+10As5+6O51)2 · 78H2O |
| 8.FD.10 | Lumsdenite | NaCa3Mg2(As3+V4+2V5+10As5+6O51) · 45H2O |
| 8.FD.10 | Gatewayite | Ca6(As3+V4+3 V5+9As5+6O51) · 31H2O |
| 8.FD.10 | Kegginite | Pb3Ca3[AsV12O40(VO)] · 20H2O |
| 8.FD.15 | Chinchorroite | Na2Mg5(As2O7)2(AsO3OH)2(H2O)10 |
Other Information
Notes:
Dissolves rapidly in cold HCl
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Martyite
mindat.org URL:
https://www.mindat.org/min-32207.html
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References for Martyite
Localities for Martyite
Showing 7 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
USA | |
| Carnegie Museum of Natural History ... |
| Carnegie Museum of Natural History ... | |
| Kampf et al. (2017) | |
| Collection Stephan Wolfsried +1 other reference |
| Kasatkin et al. (2014) +1 other reference |
| Kampf et al. (2008) +1 other reference |
| Kampf et al. (2012) |
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Blue Cap Mine, La Sal Creek Mining District, San Juan County, Utah, USA