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Metarossite

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Big Photo

San Miguel Co., Colorado, USA
© Brent Thorne

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Formula:
Ca(V
 
2
O
 
6
) · 2H
 
2
O
System:TriclinicColour:Very light yellow to ...
Hardness:1 - 2
Name:In allusion to its difference = "Meta" and relationship to Rossite.


A secondary mineral resulting from the dehydration of Rossite.

Classification of Metarossite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/G.07-60
Nickel-Strunz 10th (pending) edition ID:4.HD.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates
Dana 8th edition ID:47.1.1.2

47 : VANADIUM OXYSALTS
1 : Normal Anhydrous Vanadium Oxysalts
Hey's CIM Ref.:21.2.1

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

Type Locality:Arrowhead tunnel (O'Neill's claim), Bull Pen Canyon, San Miguel County, Colorado, USA
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.
Year of Discovery:1927
Geological Setting of type material:Carnotite-bearing sandstone
Associated Minerals at type locality:
RossiteGypsumCarnotite

Physical Properties of Metarossite

Lustre:Pearly, Dull
Diaphaneity (Transparency):Translucent
Colour:Very light yellow to pale grenish yellow; colourless to pale yellow in transmitted light
Hardness (Mohs):1 - 2
Tenacity:Fragile
Density (calculated):2.8 g/cm3

Crystallography of Metarossite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 6.215Å, b = 7.065Å, c = 7.769Å
α = 92.97°, β = 96.65°, γ = 105.78°
Ratio:a:b:c = 0.88 : 1 : 1.1
Unit Cell Volume:V 324.82 ų (Calculated from Unit Cell)
Z:2
Morphology:Crystals platy; flaky; massive. As alteration rims on and complete replacements of Rossite.
Twinning:On {101} as the twin plane.

Optical Data of Metarossite

Type:Biaxial (+)
RI values: nα = 1.840 nβ = 1.850 nγ = 1.850
2V:Measured: 70°
Maximum Birefringence:δ = 0.010

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:relatively strong

Chemical Properties of Metarossite

Formula:
Ca(V
 
2
O
 
6
) · 2H
 
2
O
Essential elements:Ca, H, O, V
All elements listed in formula:Ca, H, O, V

Relationship of Metarossite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.HD.05Rossite
Ca(V
 
2
O
 
6
) · 4H
 
2
O
4.HD.15Munirite
NaVO
 
3
 · 1.9H
 
2
O
4.HD.20Metamunirite
NaVO
 
3
4.HD.25Dickthomssenite
Mg(V
 
2
O
 
6
) · 7H
 
2
O
4.HD.30Ansermetite
Mn
2+
 
(V
 
2
O
 
6
) · 4H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
21.2.2Rossite
Ca(V
 
2
O
 
6
) · 4H
 
2
O
21.2.3Metahewettite
CaV
 
6
O
 
16
 · 3H
 
2
O
21.2.4Hewettite
CaV
 
6
O
 
16
 · 9H
 
2
O
21.2.5Pintadoite
Ca
 
2
(V
 
2
O
 
7
) · 9H
 
2
O
21.2.6Hendersonite
(Ca,Sr)
 
1.3
V
 
6
O
 
16
 · 6H
 
2
O
21.2.7Fernandinite
(Ca,K)(V
5+
 
,V
4+
 
,Fe
2+
 
)
 
8
O
 
20
 · 10H
 
2
O
21.2.8Pascoite
Ca
 
3
(V
 
10
O
 
28
) · 17H
 
2
O
21.2.9Sherwoodite
Ca
 
4.5
(AlV
4+
2
V
5+
12
O
 
40
) · 28H
 
2
O
21.2.10Melanovanadite
Ca(V
5+
 
,V
4+
 
)
 
4
O
 
10
 · 5H
 
2
O
21.2.11Grantsite
(Na,Ca)V
 
6
O
 
16
 · 4H
 
2
O
21.2.12Hummerite
K
 
2
Mg
 
2
(V
 
10
O
 
28
) · 16H
 
2
O
21.2.13Metadelrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
21.2.14Delrioite
CaSr(V
 
2
O
 
6
)(OH)
 
2
 · 3H
 
2
O
21.2.15Straczekite
(Ca,K,Ba)(V
5+
 
,V
4+
 
)
 
8
O
 
20
 · 3H
 
2
O
21.2.16Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)(VO
 
4
)
 
2
(OH)

Other Names for Metarossite

Other Languages:
German:Metarossit
Russian:Метароссит
Spanish:Metarossita

Other Information

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

References for Metarossite

Reference List:

- +
Foshag, W. F. and Hess, F. L. (1928): Rossite and metarossite; two new vanadates from Colorado. Proceedings of the U.S. National Museum, 72, 1.

American Mineralogist (1928): 13: 160 (abstract).

Weeks, A.D. and M.E. Thompson (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. and W.H. Barnes (1960) The crystal structure of metarossite. Canadian Mineralogist (1960): 6: 448-466, 697.

Internet Links for Metarossite

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  • Look for Metarossite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Metarossite details from Handbook of Mineralogy (PDF)
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    • Localities for Metarossite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Příbram
          • Háje
    		Minerál 5/1995
    Russia
     
    • Northern Region
      • Karelia Republic
        • Lake Onega
          • Zaonezhie peninsula
            • Velikaya Guba uran-vanadium deposit
    		P.M. Kartashov data
    USA
     
    • Arizona
      • Apache & Navajo Cos.
        • White Canyon-Monument Valley District
    		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, Econ. Geol.: 53: 639-662.
      • Apache Co.
    		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.
    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
        • Navajo Indian Reservation
          • Monument Valley
            • 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, Econ. Geol.: 53: 639-662; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 78.
    • Colorado
      • Garfield Co.
        • East Rifle Creek area
    		Minerals of Colorado (1997) E.B. Eckels
      • Montrose Co.
        • Uravan District
    		"Luc Vandenberghe" collection
          • Paradox Valley
    		Minerals of Colorado (1997) E.B. Eckels; Amer.Min.(1959) 44, 261-264
    Minerals of Colorado (1997) E.B. Eckels
      • San Miguel Co.
        • Slick Rock District
          • Bull Pen Canyon
    		Rocks & Minerals 80:5 pp358-359
    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.
    Minerals of Colorado (1997) Eckels, E. B.
        • Uravan District
    		Minerals of Colorado (1997) E.B. Eckels
          • Carnation Mine group
    		Excalibur Mineral Co. sample and analysis
      • San Miguel County
        • Bull Pen Canyon
    		Proceedings of the U.S. National Museum (1927): 72, 1-12.
    • 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 District (Polar Mesa)
    		Collected by and in the collection of Brent Thorne.
    UGMS Bull 117 Minerals and Mineral Localities of Utah
        • Thompsons District (S. E. Thomsons)
          • 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
        • Yellow Cat District (W. part of Thompsons District)
    		Collected by and in the collection of Brent Thorne.
      • San Juan Co.
        • Abajo Mts
          • Monticello District (Blue Mountain District)
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
        • La Sal District (Paradox Valley District)
          • Lyon Canyon Creek
    		Collected by and in the collection of Brent Thorne.
        • La Sal Quadrangle
    		Tom Loomis specimen
        • White Canyon District
          • Red Canyon
    		Min News 5:10 p1-5
          • White Canyon
            • Copper Point
    		Bridget E. McCollam (2002) ZIPPEITES: CHEMICAL CHARACTERIZATION AND POWDER X-RAY DIFFRACTION STUDIES OF SYNTHETIC AND NATURAL SAMPLES MS Thesis, Notre Dame University
      • Wayne Co.
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Wyoming
      • Crook Co.
        • Northern Black Hills District
    		USGS Bull 1082J
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