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Hedegaardite

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About HedegaarditeHide

This page provides mineralogical data about Hedegaardite.


Classification of HedegaarditeHide

Approved, Pending publication
Approval Year:
2014

Chemical Properties of HedegaarditeHide

Formula:
(Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH)

Crystallography of HedegaarditeHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3c
Cell Parameters:
a = 10.3519(9) Å, c = 37.064(5) Å
Ratio:
a:c = 1 : 3.58
Unit Cell V:
3,439.72 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.189 (37)
3.431(35)
3.190(61)
2.862(100)
2.741(21)
2.595(68)
1.922(25)
1.715(33)
Comments:
From Type Description.

Type Occurrence of HedegaarditeHide

Place of Conservation of Type Material:
Type material is deposited in the mineralogical collection of the Bergakademie Freiberg, Freiberg, Germany, catalogue numbers 83808 (Punta de Lobos) and 83809 (Cerro Mejillones)

Synonyms of HedegaarditeHide

Relationship of Hedegaardite to other SpeciesHide

Other Members of this group:
FerromerrilliteCa9NaFe2+(PO4)7Trig. 3m : R3c
MerrilliteCa9NaMg(PO4)7Trig. 3m : R3m
StrontiowhitlockiteSr9Mg(PO4)6(HPO4)Trig. 3m : R3c
TuiteCa3(PO4)2Trig. 3m (3 2/m) : R3m
WhitlockiteCa9Mg(PO4)6(HPO4)Trig. 3m : R3c

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 HedegaarditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Witzke, T., Phillips, B.L., Woerner, W., Countinho, J.M.V., Fa¨rber, G. and Contreira Filho, R.R. (2015) Hedegaardite, IMA 2014- 069. CNMNC Newsletter No. 23, February 2015, page 54; Mineralogical Magazine, 79, 51-58.

Internet Links for HedegaarditeHide

Localities for HedegaarditeHide

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.
Chile (TL)
 
  • Antofagasta Region
    • Antofagasta Province
      • Mejillones
        • Mejillones peninsula
Witzke, T., Phillips, B.L., Woerner, W., Countinho, J.M.V., Fa¨rber, G. and Contreira Filho, R.R. (2015) Hedegaardite, IMA 2014- 069. CNMNC Newsletter No. 23, February 2015, page 54; Mineralogical Magazine, 79, 51-58.
  • Tarapacá Region
    • Iquique Province
      • Punta de Lobos
Witzke, T., Phillips, B.L., Woerner, W., Countinho, J.M.V., Fa¨rber, G. and Contreira Filho, R.R. (2015) Hedegaardite, IMA 2014- 069. CNMNC Newsletter No. 23, February 2015, page 54; Mineralogical Magazine, 79, 51-58.
Mineral and/or Locality  
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