Metatyuyamunite (original) (raw)
A valid IMA mineral species - grandfathered
About MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Formula:
Ca(UO2)2(VO4)2 · 3H2O
Previously assumed to have 3-5 water molecules per formula unit.
Specific Gravity:
3.81 - 3.93
Crystal System:
Orthorhombic
Name:
Named in 1953 by Alice Mary Dowse Weeks, Mary E. Thompson, and Raymond B. Thompson for prefix meta- indicating a dehydration relationship to tyuyamunite.
Co-Type Localities:
ⓘ Mesa No. 1 Mine, White Ash Peak, Lukachukai Mining District, Lukachukai Mountains, Apache County, Arizona, USA
ⓘ Laguna Mining District, New Mexico, USA
ⓘ Haystack Mine, Ambrosia Lake subdistrict, McKinley County, New Mexico, USA
ⓘ Shiprock District, San Juan County, New Mexico, USA
Visually indistinguishable from tyuyamunite or similar uranyl vanadates. May spontaneously dehydrate in dry atmosphere from tyuyamunite.
Unique IdentifiersHide
This section is currently hidden. Click the show button to view.
Long-form identifier:
mindat:1:1:2690:7
a561ef0e-4fca-42e4-9aa4-46938a9bc245
IMA Classification of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Approved, 'Grandfathered' (first described prior to 1959)
Type description reference:
Classification of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
4.HB.25
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
B : Uranyl Sorovanodates
40.2a.26.2
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
21.4.7
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
Mineral SymbolsHide
This section is currently hidden. Click the show button to view.
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Mtyu | 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 MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Hardness Data:
Mohs hardness reference species
Density:
3.81 - 3.93 g/cm3 (Measured) 3.85 g/cm3 (Calculated)
Optical Data of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
RI values:
_n_α = 1.620 - 1.680 _n_β = 1.835 - 1.842 _n_γ = 1.865 - 1.899
2V:
Measured: 45° , Calculated: 44°
δ = 0.245
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
XYZ = cab
Comments:
X = colorless
Y= very pale canary yellow
Z = pale canary yellow
Chemistry of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Mindat Formula:
Ca(UO2)2(VO4)2 · 3H2O
Previously assumed to have 3-5 water molecules per formula unit.
Crystallography of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Crystal System:
Orthorhombic
Class (H-M):
m m m _(_2/_m_2/_m_2/m ) - Dipyramidal
Cell Parameters:
a = 10.54 Å, b = 8.49 Å, c = 17.34 Å
Ratio:
a:b:c = 1.241 : 1 : 2.042
Unit Cell V:
1,551.66 ų (Calculated from Unit Cell)
Morphology:
Usually earthy granular, also rhombic platy crystals.
X-Ray Powder DiffractionHide
This section is currently hidden. Click the show button to view.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.51 Å | (100) |
| 5.22 Å | (25) |
| 4.22 Å | (75) |
| 3.77 Å | (25) |
| 3.26 Å | (50b) |
| 3.05 Å | (50b) |
| 2.58 Å | (25) |
Comments:
See also ICDD 43-187
Geological EnvironmentHide
This section is currently hidden. Click the show button to view.
Type Occurrence of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Co-Type Localities:
ⓘ Mesa No. 1 Mine, White Ash Peak, Lukachukai Mining District, Lukachukai Mountains, Apache County, Arizona, USA
ⓘ Laguna Mining District, New Mexico, USA
ⓘ Haystack Mine, Ambrosia Lake subdistrict, McKinley County, New Mexico, USA
ⓘ Shiprock District, San Juan County, New Mexico, USA
General Appearance of Type Material:
Scales and laths, radial aggregates. Massive, compact to cryptocrystalline. Powdery.
Geological Setting of Type Material:
Sedimentary uranium deposit
Reference:
Weeks, A.D., Thompson, M.E. (1953) Identification and Occurrence of Uranium and Vanadium Minerals from the Colorado Plateaus. Trace Elements Investigations Report 334, United States Geological Survey: 69 pgs.
Other Language Names for MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Relationship of Metatyuyamunite to other SpeciesHide
This section is currently hidden. Click the show button to view.
Other Members of this group:
Common AssociatesHide
This section is currently hidden. Click the show button to view.
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
This section is currently hidden. Click the show button to view.
| 4.HB.05 | Carnotite | K2(UO2)2(VO4)2 · 3H2O | Mon. 2/m : _P_21/b |
|---|---|---|---|
| 4.HB.05 | Margaritasite | (Cs,K,H3O)2(UO2)2(VO4)2 · H2O | Mon. 2/m : _P_21/b |
| 4.HB.10 | Sengierite | Cu2(UO2)2(VO4)2 · 6H2O | Mon. 2/m : _P_21/b |
| 4.HB.15 | Curienite | Pb(UO2)2(VO4)2 · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.HB.15 | Francevillite | Ba(UO2)2(VO4)2 · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.HB.15 | Fritzscheite | Mn(UO2)2(PO4,VO4)2 · 10H2O (?) | Tet. |
| 4.HB.15 | Finchite | Sr(UO2)2(V2O8) · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 4.HB.20 | Metavanuralite | Al(UO2)2(VO4)2(OH) · 8H2O | Tric. |
| 4.HB.20 | Vanuralite | Al(UO2)2(V2O8)(OH) · 11H2O | Mon. 2/m |
| 4.HB.25 | Tyuyamunite | Ca(UO2)2(VO4)2 · 5-8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n a |
| 4.HB.30 | Strelkinite | Na2(UO2)2(VO4)2 · 6H2O | Orth. |
| 4.HB.35 | Uvanite | U6+2V5+6O21 · 15H2O (?) | Orth. |
| 4.HB.40 | Rauvite | Ca(UO2)2(V10O28) · 16H2O | |
| 4.HB.45 | Vandermeerscheite | K2[(UO2)2V2O8] · 2H2O | Mon. 2/m |
Fluorescence of MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Other InformationHide
This section is currently hidden. Click the show button to view.
Health Risks:
Contains uranium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Avoid prolonged exposure in proximity of the body. Store away from inhabited areas.
Internet Links for MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
References for MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
Reference List:
Frost, Ray L., Čejka, Jiří, Weier, Matt L., Martens, Wayde, Henry, Dermot A. (2005) Vibrational spectroscopy of selected natural uranyl vanadates. Vibrational Spectroscopy, 39 (2) 131-138 doi:10.1016/j.vibspec.2005.01.005
Localities for MetatyuyamuniteHide
This section is currently hidden. Click the show button to view.
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
This section is currently hidden. Click the show button to view.
- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.