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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:O'Neill's Claim, Dolores River, Bull Pen Canyon, Slick Rock District, San Miguel Co., 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
 
2
(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

Search Engines:
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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
    		Minerál 5/1995
    Russia
     
    • Northern Region
      • Karelia Republic
        • Lake Onega
          • Zaonezhie peninsula
    		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.
        • 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
          • 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
            • Dolores River
    		Proceedings of the U.S. National Museum (1927): 72, 1-12.
    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
    • 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
        • 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 Quadrangle
    		Tom Loomis specimen
        • Paradox Valley
          • Paradox Valley District
    		Collected by and in the collection of Brent Thorne.
        • 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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