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Ca6(As3+V4+3 V5+9As5+6O51)·31H2O
Crystal System:
Related to vanarsite and packratite. The other polyoxometalate from the same site is, e.g., kegginite.

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Classification of GatewayiteHide

Approved, Pending publication
Approval Year:

Chemical Properties of GatewayiteHide

Ca6(As3+V4+3 V5+9As5+6O51)·31H2O
IMA Formula:
Ca6(As3+V4+3V5+9As5+6O51) · 31H2O

Crystallography of GatewayiteHide

Crystal System:
Class (H-M):
2 - Sphenoidal
Space Group:
Cell Parameters:
a = 11.1850(4) Å, b = 16.8528(4) Å, c = 20.7146(15) Å
β = 91.166(6)°
a:b:c = 0.664 : 1 : 1.229
Unit Cell V:
3,903.86 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

Type Occurrence of GatewayiteHide

Place of Conservation of Type Material:
Co-type material is deposited in the collections of the Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 64513, 64514, 65555 and 65559

Synonyms of GatewayiteHide

Other InformationHide

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 GatewayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Hughes, J.M., Marty, J. and Nash, B.P. (2015) Gatewayite, IMA 2014- 096. CNMNC Newsletter No. 24, April 2015, page 250; Mineralogical Magazine, 79, 247-251.

Internet Links for GatewayiteHide

Localities for GatewayiteHide

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.
  • Colorado
    • Mesa Co.
      • Gateway District
        • Gateway
Kampf, A.R., Hughes, J.M., Marty, J. and Nash, B.P. (2015) Gatewayite, IMA 2014- 096. CNMNC Newsletter No. 24, April 2015, page 250; Mineralogical Magazine, 79, 247-251. ; Kampf, A.R., Nash, B.P., Marty, J., Hughes, J.M. (2016): Mesaite, CaMn2+5(V2O7)3·12H2O, a new vanadate mineral from the Packrat mine, near Gateway, Mesa County, Colorado, USA. Mineralogical Magazine: 80: (in press)
Mineral and/or Locality  
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