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Metahewettite

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Formula:
CaV6O16 · 3H2O
Colour:
Deep red; red to orange in transmitted light
Lustre:
Silky, Dull
Specific Gravity:
2.51 - 2.94
Crystal System:
Monoclinic
Member of:
Name:
In allusion to its lesser water content and relationship to Hewettite.
A tertiary mineral resulting from the dehydration of Hewettite as impregnations in sandstone.


Hide all sections | Show all sections

Classification of MetahewettiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.HE.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
47.3.1.2

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
21.2.3

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

Physical Properties of MetahewettiteHide

Silky, Dull
Transparency:
Translucent
Colour:
Deep red; red to orange in transmitted light
Streak:
Maroon to brownish red
Comment:
Soft
Density:
2.51 - 2.94 g/cm3 (Measured)    3.05 g/cm3 (Calculated)
Comment:
Measured values are for material with 9H2O and 3H2O, respectively

Optical Data of MetahewettiteHide

Type:
Biaxial (-)
RI values:
nα = 1.700 nβ = 2.100 nγ = 2.230
2V:
Calculated: 52°
Max Birefringence:
δ = 0.530
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
relatively strong
Pleochroism:
Visible
Comments:
X = c = Light yellow-orange
Y = b = Deep red
Z = a = Deeper red
Comments:
2V measured: not determined.

Chemical Properties of MetahewettiteHide

Formula:
CaV6O16 · 3H2O
IMA Formula:
CaV5+6O16 · 3H2O

Crystallography of MetahewettiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.15 Å, b = 3.607 Å, c = 18.44 Å
β = 118.03°
Ratio:
a:b:c = 3.368 : 1 : 5.112
Unit Cell V:
713.34 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals microscopic laths or tablets, flattened on {001} and bounded laterally by {010} and {110}, with a prism angle of 57°; in parallel or radial-fibrous masses; pulverulent; coatings.
Comment:
Space Group = A2/m

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.19 (100)
5.36 (12)
3.578 (30)
3.062 (18)
2.812 (24)
2.295 (17)
2.206 (22)

Type Occurrence of MetahewettiteHide

General Appearance of Type Material:
Impregnations
Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA: #93306. U.S. National Museum of Natural History, Washington, D.C., USA: #93305 through 93308.
Geological Setting of Type Material:
Colorado Plateau-type U-V deposit.

Other Language Names for MetahewettiteHide

Relationship of Metahewettite to other SpeciesHide

Member of:
Other Members of this group:
Barnesite(Na,Ca)V6O16 · 3H2OMon. 2/m : P2/m
Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon.
Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m

Common AssociatesHide

GypsumCaSO4 · 2H2O
HewettiteCaV6O16 · 9H2O
SeleniumSe
Associated Minerals Based on Photo Data:
Francevillite1 photo of Metahewettite associated with Francevillite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.HE.05MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
4.HE.10ShcherbinaiteV5+2O5Orth. mmm (2/m 2/m 2/m) : Pmmn
4.HE.15HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
4.HE.20BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
4.HE.20Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2OMon.
4.HE.20Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
4.HE.20Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
4.HE.20Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
4.HE.25HäggiteV3+V4+O2(OH)3Mon.
4.HE.30DoloresiteV4+3O4(OH)4Mon.
4.HE.35DuttoniteV4+O(OH)2Mon. 2/m
4.HE.40CavoiteCaV4+3O7Orth. mmm (2/m 2/m 2/m) : Pnma

Related Minerals - Dana Grouping (8th Ed.)Hide

47.3.1.1HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
47.3.1.3Barnesite(Na,Ca)V6O16 · 3H2OMon. 2/m : P2/m
47.3.1.4Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
47.3.1.5Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.2.1MetarossiteCa(V2O6) · 2H2OTric. 1 : P1
21.2.2RossiteCa(VO3)2•4H2OTric. 1 : P1
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.
21.2.12HummeriteK2Mg2(V10O28) · 16H2OTric.
21.2.13MetadelrioiteCaSr(V2O6)(OH)2Tric.
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

Notes:
Reversibly hydrates to Hewettite. Slightly 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 MetahewettiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hillebrand, Merwin, and Wright (1914) Proceedings of the American Philosophical Society: 53: 31.
Hillebrand, Merwin, and Wright (1914) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 54: 209.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1061-1062.
H. G. Bachmann and W. H. Barnes (1962): The crystal structure of a sodium-calcium variety of metahewettite. Can. Mineral. 7, 219-235.
Bayliss, P. (1979) X-ray powder data for metahewettite. Mineralogical Magazine, 43, 550.
Bayliss, P. (1982) X-ray powder data for hewettite. Mineralogical Magazine, 46,
503–504.
Evans, H.T., Jr. and J.M. Hughes (1990) Crystal chemistry of the natural vanadium bronzes. American Mineralogist: 75: 508-521.

Internet Links for MetahewettiteHide

Localities for MetahewettiteHide

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.
Kazakhstan
 
  • Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast')
    • Karatau Range
      • Aksumbe
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43
Kyrgyzstan
 
  • Osh Oblast
    • Alai Range (Alay Range)
      • Fergana Valley
        • Fergana
Karpenko, V.Yu. et al. Zapiski RMO 138(1)83(2009)
USA
 
  • Arizona
    • Apache & Navajo Cos.
      • White Canyon-Monument Valley District
Patrick Haynes (identified by me about 20 years ago)
    • Apache Co.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. guidebook: 1147-148; Peirce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. guidebook: 147-148; Peirce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. guidebook: 147-148; Peirce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. field guidebook: 147-148; Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. field guidebook: 147-148; Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. field guidebook: 147-148; Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
      • Navajo Indian Reservation
        • Monument Valley
          • Yazzi Mesa
            • Monument No. 2 channel
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 294; Finnell, T.L. (1957), Structural control of uranium ore at the Monument No. 2 mine, Apache Co., AZ, Econ.Geol.: 52: 25-35; Rocks & Min.: 64:500.; Mineralogical Magazine 1979 43 : 550-550
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of northwestern Arizona, New Mexico Geol. Soc. 24th. field guidebook: 147-148; Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
Chenoweth, W.L. (1973), Uranium deposits of NE Arizona, New Mexico Geol. Soc. 24th. Guidebook: 147-148; Pierce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 252-254.
    • Coconino Co.
      • Vermillion Cliffs District
Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 218; Barrett, D.C. & C. Collins (1953), Preliminary Reconnaissance Report, US Atomic Energy Comm. USAEL, RME 155.
    • Navajo Co.
Patrick Haynes. ID by the late Howard Evans, Jr.
    • Yavapai Co.
      • Bradshaw Mts (Bradshaw Range)
        • Big Bug District
          • Poland
MRDS database Dep. ID #10026929, MRDS ID #M001123.
  • Arkansas
    • Garland Co.
      • Wilson Springs (Potash Sulfur Springs)
Rocks & Min.: 63:108.
  • Colorado
    • Mesa Co.
      • Uravan District
        • Calamity Mesa
Minerals of Colorado (1997) Eckels, E. B.
    • Montrose Co.
      • Uravan District
        • Paradox Valley
Dana 7:I:602.
Min Rec (1993) 24:311-314
    • San Miguel Co.
      • Bull Pen Canyon
Rocks & Minerals 80:5 pp358-359
      • Slick Rock District
In the collection of Alex Earl
      • Uravan District
        • Carnation Mine group
Excalibur Mineral Co. sample and analysis
  • Nevada
    • Eureka Co.
      • Gibellini District
NBMG Bull 64 Geology and Mineral Resources of Eureka County, Nevada
NBMG Spec. Pub. 31 Minerals of Nevada; [Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 4, 362
        • Fish Creek Range
American Mineralogist (1979), 64:713-720
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Mexico
    • Cibola Co.
      • Grants District
NMBMMR Memoir 15 Geology and Technology of the Grants Uranium Region; Kittel, Kelley Melancon (1966) Uranium Deposits of the Grants Region. New Mexico Geological Society Guidebook pp 173-183
    • McKinley Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
New Mexico Bureau of Mines and Mineral Resources, Mineral Museum no. 15244
    • San Juan Co.
      • Shiprock District
        • Eastside mines
NMBGMR Open-file Report - 466
  • Oregon
Dan Weinrich
Handbook of Mineralogy
  • South Dakota
    • Fall River Co.
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"; USGS Bull 1063D; 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 pp345-349
        • Craven Canyon
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
  • Utah
    • Emery Co.
      • San Rafael District (San Rafael Swell)
UGMS Bull 117 Minerals and Mineral Localities of Utah
DANA R. KELLEY AND PAUL F. KERR (1958) URANO-ORGANIC ORE AT TEMPLE MOUNTAIN, UTAH. BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA VOL. 69. PP. 701-756.
UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Garfield Co.
      • Henry Mts
UGMS Bull 117 Minerals and Mineral Localities of Utah
    • Grand Co.
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • Polar Mesa District (Polar Mesa)
Am Min 16:273-277
UGMS Bull 117 Minerals and Mineral Localities of Utah
      • Thompsons District
        • Yellow Cat District
UGMS Bull 117 Minerals and Mineral Localities of Utah
        • The Poison Strip
UGMS Bull 117 Minerals and Mineral Localities of Utah; Am. Min. 48 (1963), 1187-1195
        • Yellow Cat Mesa
Collected by and in the collection of Brent Thorne.
    • San Juan Co.
      • La Sal District (Paradox Valley District)
        • La Sal
Collected by and in the collection of Brent Thorne.
      • Paradox Valley
        • Paradox Valley District
UGMS Bull 117 Minerals and Mineral Localities of Utah
Mineral and/or Locality  
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