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UM1997-09-AsO:CaHMgZn

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Formula:
(Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O
Colour:
milky white, colourless
Crystal System:
Monoclinic
Originally described as "Mg-Villyaellenite" by Ondruš et al. (1997).
Kampf et al. (2016) strongly suggest that this phase is chongite, a member of the Huréaulite Group.



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Classification of UM1997-09-AsO:CaHMgZnHide

Notes:
Unnamed (probably invalid)
Approval History:
Unnamed, and probably invalid.
8.CB.10

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
B : With only medium-sized cations, RO4:H2O = 1:1
39.2.1.4

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
2 : (AB)5[HXO4]2[XO4]2.xH2O

Physical Properties of UM1997-09-AsO:CaHMgZnHide

Colour:
milky white, colourless

Chemical Properties of UM1997-09-AsO:CaHMgZnHide

Formula:
(Mg,Ca,Zn)5(AsO4)2(HAsO4)2 · 4H2O

Crystallography of UM1997-09-AsO:CaHMgZnHide

Crystal System:
Monoclinic
Cell Parameters:
a = 18.588 Å, b = 9.413 Å, c = 9.976 Å
β = 96.91°
Ratio:
a:b:c = 1.975 : 1 : 1.06
Unit Cell V:
1732.81 ų

Synonyms of UM1997-09-AsO:CaHMgZnHide

Related Minerals - Nickel-Strunz GroupingHide

8.CB.05SerrabrancaiteMnPO4 · H2OMon. 2/m : B2/b
8.CB.10Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
8.CB.10VillyaelleniteMnMn2Ca2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10NyholmiteCd3Zn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.10MiguelromeroiteMnMn2Mn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
8.CB.15FluckiteCaMn2+(HAsO4)2 · 2H2OTric. 1 : P1
8.CB.15KrautiteMn(HAsO4) · H2OMon. 2 : P21
8.CB.20Cobaltkoritnigite(Co,Zn)(HAsO4) · H2OTric. 1 : P1
8.CB.20KoritnigiteZn(HAsO4) · H2OTric. 1 : P1
8.CB.25YvoniteCu(HAsO4) · 2H2OTric.
8.CB.30GeminiteCu(HAsO4) · H2OTric.
8.CB.35SchubneliteFe3+VO4 · H2OTric.
8.CB.40RadovaniteCu2Fe3+(AsO4)(HAs3+O3)2 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CB.45KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.
8.CB.50KolovratiteNixZny(VO4)0.67(x+y) · nH2O
8.CB.55IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.
8.CB.60BurgessiteCo2(H2O)4[AsO3(OH)]2(H2O)Mon. 2/m

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

39.2.1.1Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2OMon. 2/m : B2/b
39.2.1.2SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
39.2.1.3VillyaelleniteMnMn2Ca2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
39.2.1.4MiguelromeroiteMnMn2Mn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b
39.2.1.6NyholmiteCd3Zn2(AsO4)2(HAsO4)2 · 4H2OMon. 2/m : B2/b

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 UM1997-09-AsO:CaHMgZnHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ondruš, P., Veselovský, F., Skála, R., Císarová, I., Hloušek, J., Frýda, J., Vavrín, I., Čejka, J. and Gabašová, A. (1997): New naturally occurring phases of secondary origin from Jáchymov (Joachimsthal). J. Czech Geol. Soc. 42, 77-107.
Kampf, A.R., Nash, B.P., Dini, M., Molina Donoso, A.A. (2016): Chongite, Ca3Mg2(AsO4)2(AsO3OH)2·4H2O, a new arsenate member of the hureaulite group from the Torrecillas mine, Iquique Province, Chile. Mineralogical Magazine: 80: 1255-1263.

Internet Links for UM1997-09-AsO:CaHMgZnHide

Localities for UM1997-09-AsO:CaHMgZnHide

ⓘ - 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.
Czech Republic
 
  • Karlovy Vary Region
    • Karlovy Vary District
[AmMin 84:688]
 
Mineral and/or Locality  
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