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About MetarossiteHide

Clarence S. Ross
Ca(V2O6) · 2H2O
Very light yellow to pale grenish yellow; colourless to pale yellow in transmitted light
Pearly, Dull
1 - 2
Specific Gravity:
2.8 (Calculated)
Crystal System:
In allusion to its difference = "Meta" and relationship to Rossite.
A secondary mineral resulting from the dehydration of Rossite.

Classification of MetarossiteHide

Approved, 'Grandfathered' (first described prior to 1959)

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates

1 : Normal Anhydrous Vanadium Oxysalts

21 : Vanadates (and vanadates with arsenate or phosphate)
2 : Vanadates of Mg, Ca, Sr or Ba

Physical Properties of MetarossiteHide

Pearly, Dull
Very light yellow to pale grenish yellow; colourless to pale yellow in transmitted light
1 - 2 on Mohs scale
2.8 g/cm3 (Calculated)

Optical Data of MetarossiteHide

Biaxial (+)
RI values:
nα = 1.840 nβ = 1.850 nγ = 1.850
Measured: 70°
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
relatively strong

Chemical Properties of MetarossiteHide

Ca(V2O6) · 2H2O
IMA Formula:
CaV5+2O6 · 2H2O

Crystallography of MetarossiteHide

Crystal System:
Class (H-M):
1 - Pinacoidal
Space Group:
Cell Parameters:
a = 6.215 Å, b = 7.065 Å, c = 7.769 Å
α = 92.97°, β = 96.65°, γ = 105.78°
a:b:c = 0.88 : 1 : 1.1
Unit Cell V:
324.82 ų (Calculated from Unit Cell)
Crystals platy; flaky; massive. As alteration rims on and complete replacements of Rossite.
On {101} as the twin plane.
parameters from the recent redetermination (Kobsch et al., 2016): a=6.2059(4), b=7.0635(4), c=7.7516(5), α=93.166(4), β=96.548(4), γ=105.883(4)Å, V=323.36(4) (Å3)

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005077MetarossiteKelsey C H, Barnes W H (1960) The crystal structure of metarossite The Canadian Mineralogist 6 448-4661960Thompson's, Utah, USA0293
0020635MetarossiteKobsch A, Downs R T, Domanik K J (2016) Redetermination of metarossite, CaV5+2O6*2H2O Acta Crystallographica E72 1280-12842016Blue Cap mine, San Juan County, Utah, USA0293
CIF Raw Data - click here to close

Type Occurrence of MetarossiteHide

General Appearance of Type Material:
Veinlets, alteration rims on Rossite lumps.
Place of Conservation of Type Material:
U.S. National Museum of Natural History, Washington, D.C., USA: #95331A, R5707A.
Geological Setting of Type Material:
Carnotite-bearing sandstone
Associated Minerals at Type Locality:

Other Language Names for MetarossiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Metarossite associated with PascoiteCa3(V10O28) · 17H2O
3 photos of Metarossite associated with RossiteCa(VO3)2•4H2O
1 photo of Metarossite associated with CoffiniteU(SiO4) · nH2O
1 photo of Metarossite associated with HummeriteK2Mg2(V10O28) · 16H2O
1 photo of Metarossite associated with Montroseite(V3+,Fe3+)O(OH)

Related Minerals - Nickel-Strunz GroupingHide

4.HD.05RossiteCa(VO3)2•4H2OTric. 1 : P1
4.HD.15MuniriteNaVO3 · 1.9H2OMon.
4.HD.25DickthomsseniteMg(V2O6) · 7H2OMon. 2/m : B2/b
4.HD.30AnsermetiteMn2+(V2O6) · 4H2OMon. 2/m

Related Minerals - Dana Grouping (8th Ed.)Hide•4H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.2.2RossiteCa(VO3)2•4H2OTric. 1 : P1
21.2.3MetahewettiteCaV6O16 · 3H2OMon. 2/m
21.2.4HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
21.2.5PintadoiteCa2(V2O7) · 9H2O
21.2.6Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
21.2.7Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
21.2.8PascoiteCa3(V10O28) · 17H2OMon. 2 : B2
21.2.9SherwooditeCa4.5(AlV4+2V5+12O40) · 28H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
21.2.10MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
21.2.11Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon. 2/m : P21/m
21.2.12HummeriteK2Mg2(V10O28) · 16H2OTric.
21.2.14DelrioiteCaSr(V2O6)(OH)2 · 3H2OMon.
21.2.15Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
21.2.16GamagariteBa2Fe3+(VO4)2(OH)Mon. 2/m : P21/m

Other InformationHide

Soluble in water.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for MetarossiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Foshag, W.F., Hess, F.L. (1928) Rossite and metarossite; two new vanadates from Colorado. Proceedings of the U.S. National Museum: 72: 1.
Foshag, W.F. (1928) New mineral names. American Mineralogist: 13: 158-160.
Barnes, W.H., Qurashi, M.M. (1952) Unit cell and space group data for certain vanadium minerals. American Mineralogist: 37: 407-422.
Weeks, A.D., Thompson, M.E. (1954) Identification and occurrence of uranium and vanadium minerals from the Colorado Plateaus. U.S. Geological Survey Bulletin 1009-B: 56–57.
Kelsey, C.H., Barnes, W.H. (1960) The crystal structure of metarossite. The Canadian Mineralogist: 6: 448-466: 697.
Baran, E.J., Cabello, C.I., Nord, A.G. (1987) Raman spectra of some MIIV2O6 brannerite-type metavanadates. Journal of Raman Spectroscopy: 18: 405-407.
Frost, R.L., Erickson, K.L., Weier, M.L. (2004) Hydrogen bonding in selected vanadates: a Raman and infrared spectroscopy study. Spectrochimica Acta Part A: 60: 2419.
Kobsch, A., Downs, R.T., Domanik, K.J. (2016) Redetermination of metarossite, CaV5+2O6·2H2O. Acta Crystallographica: E7: 1280-1284.

Internet Links for MetarossiteHide

Localities for MetarossiteHide

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 locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
  • Central Bohemian Region
    • Příbram District
      • Háje
Minerál 5/1995
  • Pardubice Region
    • Chrudim District
      • Prachovice
Sejkora J., Škácha P., Venclík V., Plášil J. (2013): Vanad-uranová mineralizace v lomu Prachovice (Česká republika) [anadium-uranium mineralization in the Prachovice quarry (Czech Republic)]. Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 21, 113-130.
  • Republic of Karelia
    • Zaonezhie peninsula
      • Velikaya Guba uran-vanadium deposit
P.M. Kartashov data
  • Arizona
    • Apache County
      • Cane Valley Mining District
        • Yazzie Mesa
          • Monument No. 2 channel
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295; Evensen, C.G. & I.B. Gray (1958), Evaluation of uranium ore guides, Monument Valley, AZ and UT, Economic Geology: 53: 639-662; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
Chenoweth, W. L. (1994). The Location and Production History of the Chimney No. 1 Uranium-Vanadium Mine, Apache County, Arizona. Arizona Geological Survey Contributed Report 94-B
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295; Chenoweth, W.L. (1967), The uranium deposits of the Lukachukai Mountains, in New Mexico Geol. Soc. Guidebook 18th. Field Conf., Guidebook of Defiancee-Zuni-Mt. Taylor region, AZ & NM: 78-85; Joralemon, I.B. (1952), Age can not wither her varieties of geological experience, Econ.Geol.: 47: 243-259; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
        • Lukachukai Mining District
          • White Ash Peak
Page, L. R.; Stocking, H. E.; Smith, H. B. (1956) Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300 pp1243-267
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 121.
  • Colorado
    • Garfield Co.
      • East Rifle Creek area
Minerals of Colorado (1997) E.B. Eckel
    • Mesa Co.
      • Gateway
Kampf, A.R., Nash, B.P., Marty, J., Hughes, J.M. (2017) Mesaite, CaMn2+5(V2O7)3·12H2O, a new vanadate mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA. Mineralogical Magazine: 81: 319–327.
    • Montrose Co.
      • Bull Canyon Mining District
Kampf, A.R., Hughes, J.M., Marty, J., Nash, B.P., Chen, Yu-S., Steele, I.M. (2014) Bluestreakite, K4Mg2(V4+2V5+8O28)·14H2O, a new mixed-valence decavanadate mineral from the Bluestreak Mine, Montrose County, Colorado: crystal structure and descriptive mineralogy. Canadian Mineralogist. 52:1007-1018; Kampf, A. R., Marty, J., Nash, B. P., Plášil, J., Kasatkin, A. V., & Škoda, R. (2012). Calciodelrioite, Ca (VO3) 2 (H2O) 4, the Ca analogue of delrioite, Sr (VO3) 2 (H2O) 4. Mineralogical Magazine, 76(7), 2803-2817.
      • Uravan Mining District
"Luc Vandenberghe" collection
        • Paradox Valley
Minerals of Colorado (1997) E.B. Eckel
Minerals of Colorado (1997) E.B. Eckel; Amer.Min.(1959) 44, 261-264
    • San Miguel Co.
      • Bull Pen Canyon
Proceedings of the U.S. National Museum (1927): 72, 1-12.; Rocks & Minerals 80:5 pp358-359
      • Slick Rock Mining District
Minerals of Colorado (1997) Eckel, E. B.; Frost, R.L., K.L. Erickson, M.L. Weier, and O. Carmody, Raman and infrared spectroscopy of selected vanadates. Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy, 2005. 61A(5): p. 829-834.; Kampf, A. R., Plášil, J., Nash, B. P., & Marty, J. (2019). Ammoniomathesiusite, a new uranyl sulfate–vanadate mineral from the Burro mine, San Miguel County, Colorado, USA. Mineralogical Magazine, 83(1), 115-121.
Minerals of Colorado (1997) Eckel, E. B.
Kampf, A.R., Hughes, J.M., Marty, J. & Nash, B. (2013) Wernerbaurite {[Ca(H2O)7]2(H2O)2(H3O)2}{V10O28}, and schindlerite, {[Na2(H2O)10](H3O)4}{V10O28}, the first hydronium-bearing decavanadate minerals. Canadian Mineralogist: 51: 297-312.
In the collection of Alex Earl
Kampf, A.R., Marty, J., Nash, B.P., Plášil, J., Kasatkin, A.V., Škoda, R. (2012): Calciodelrioite, Ca(VO3)2(H2O)4, the Ca analogue of delrioite, Sr(VO3)2(H2O)4. Mineralogical Magazine, 76, 2803-2817.
      • Uravan Mining District
Minerals of Colorado (1997) E.B. Eckel
        • Carnation Mine group
Excalibur Mineral Co. sample and analysis
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295; Evensen, C.G. & I.B. Gray (1958), Evaluation of uranium ore guides, Monument Valley, AZ and UT, Economic Geology: 53: 639-662.
  • New Mexico
    • San Juan Co.
Northrop, Minerals of New Mexico, 3rd. Rev. Ed., 1996
        • Eastside mines
NMBGMR Open-file Report - 466
  • Utah
    • Grand Co.
      • Polar Mesa Mining District
Collected by and in the collection of Brent Thorne.
      • Thompsons Mining District
        • The Poison Strip
Collected by and in the collection of Brent Thorne.
UGMS Bull 117 Minerals and Mineral Localities of Utah
        • Yellow Cat Mesa
Collected by and in the collection of Brent Thorne.; Kasatkin, A. V., Plasil, J., Pekov, I. V., Belakovskiy, D. I., Nestola, F., Cejka, J., ... & Thorne, B. (2015). Karpenkoite, Co3 (V2O7)(OH) 2· 2H2O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of Geosciences, 60(4), 251-257.
          • Parco Mine Group
UGMS Bull 117 Minerals and Mineral Localities of Utah; Am Min 49:1511-1526; Am Min (1964) 49:1511-1526; American Mineralogist (1956) Vol. 41, pp. 156-157
    • San Juan Co.
      • Abajo Mountains
        • Monticello Mining District (Blue Mountain Mining District)
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • La Sal Mountains
        • La Sal Mining District (Paradox Valley Mining District)
          • La Sal
In the collection of Alex Earl
Collected by and in the collection of Brent Thorne.
          • Lion Canyon
Collected by and in the collection of Brent Thorne.
      • La Sal Quadrangle
Tom Loomis specimen
Huff, L. C., & Lesure, F. G. (1962). Diffusion features of uranium-vanadium deposits in Montezuma Canyon, Utah. Economic Geology, 57(2), 226-237.
      • Red Canyon
Min News 5:10 p1-5
      • White Canyon
    • Wayne Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
  • Wyoming
    • Crook Co.
      • Northern Black Hills Mining District
USGS Bull 1082J
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