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Phoxite

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New structure type. Unique combination of elements. Also unique combination of anions: the first mineral with essential (hydroxy)phosphate and oxalate anions.


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Classification of PhoxiteHide

Approved, Pending publication
Approval Year:
2018

Chemical Properties of PhoxiteHide

Formula:
(NH4)2Mg2(C2O4)(PO3OH)2(H2O)4

Crystallography of PhoxiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 7.2962(3) Å, b = 13.5993(4) Å, c = 7.8334(6) Å
β = 108.271(8)°
Ratio:
a:b:c = 0.537 : 1 : 0.576
Unit Cell V:
738.07 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.17(100)
5.57(85)
3.799(60)
3.377(59)
2.914(72)
3.536(32)
2.425(37)
2.275(63)

Type Occurrence of PhoxiteHide

Place of Conservation of Type Material:
mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Blvd, Los Angeles, California, USA, catalogue numbers 66697, 66698, 66699 and 66700 (cotypes)

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 PhoxiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Celestian, A.J., Nash, B.P. and Marty, J. (2018) Phoxite, IMA 2018-009. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

Internet Links for PhoxiteHide

Localities for PhoxiteHide

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.
USA (TL)
 
  • Arizona
    • Maricopa Co.
      • Painted Rock Mts
        • Painted Rock District
          • Theba
Kampf, A.R., Celestian, A.J., Nash, B.P. and Marty, J. (2018) Phoxite, IMA 2018-009. CNMNC Newsletter No 43, June 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.
Mineral and/or Locality  
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