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Panasqueiraite

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Formula:
CaMg(PO4)(OH,F)
System:
Monoclinic
Hardness:
5
Member of:
Tilasite Group, OH-analogue of isokite.

Extremely rare; most of samples are in fact triplite or other visually similar phosphates (Mila et al., 2014).


Classification of Panasqueiraite

Approved
Approval Year:
1978
8.BH.10

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.5.6.3

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
22.1.12

22 : Phosphates, Arsenates or Vanadates with other Anions
1 : Phosphates, arsenates or vanadates with fluoride

Physical Properties of Panasqueiraite

Hardness (Mohs):
5

Optical Data of Panasqueiraite

Type:
Biaxial (+)
RI values:
nα = 1.590 nβ = 1.596 nγ = 1.616
2V:
Measured: 51° , Calculated: 58°
Max Birefringence:
δ = 0.026
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct

Chemical Properties of Panasqueiraite

Formula:
CaMg(PO4)(OH,F)
IMA Formula:
CaMgPO4(OH)
Elements listed in formula:

Crystallography of Panasqueiraite

Crystal System:
Monoclinic
Cell Parameters:
a = 6.53 Å, b = 8.75 Å, c = 6.91 Å
β = 112.33°
Ratio:
a:b:c = 0.746 : 1 : 0.79
Unit Cell Volume:
V 365.21 ų (Calculated from Unit Cell)

Type Occurrence of Panasqueiraite

Relationship of Panasqueiraite to other Species

Member of:
Other Members of Group:
DurangiteNaAl(AsO4)F
IsokiteCaMg(PO4)F
KononoviteNaMg(SO4)F
LacroixiteNaAl(PO4)F
MaxwelliteNaFe3+(AsO4)F
TilasiteCaMg(AsO4)F
8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2
8.BH.10DurangiteNaAl(AsO4)F
8.BH.10IsokiteCaMg(PO4)F
8.BH.10LacroixiteNaAl(PO4)F
8.BH.10MaxwelliteNaFe3+(AsO4)F
8.BH.10TilasiteCaMg(AsO4)F
8.BH.15DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3
8.BH.20PerloffiteBa(Mn2+,Fe2+)2Fe23+(PO4)3(OH)3
8.BH.20JohntomaiteBaFe22+Fe23+(PO4)3(OH)3
8.BH.25Bertossaite(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4
8.BH.30CarminitePbFe23+(AsO4)2(OH)2
8.BH.30SewarditeCaFe23+(AsO4)2(OH)2
8.BH.35AdeliteCaMg(AsO4)(OH)
8.BH.35ArsendescloizitePbZn(AsO4)(OH)
8.BH.35AustiniteCaZn(AsO4)(OH)
8.BH.35CobaltaustiniteCaCo(AsO4)(OH)
8.BH.35ConichalciteCaCu(AsO4)(OH)
8.BH.35DuftitePbCu(AsO4)(OH)
8.BH.35GabrielsonitePbFe(AsO4)(OH)
8.BH.35NickelaustiniteCaNi(AsO4)(OH)
8.BH.35TangeiteCaCu(VO4)(OH)
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)
8.BH.35HermannroseiteCaCu(PO4)(OH)
8.BH.40ČechitePbFe2+(VO4)(OH)
8.BH.40DescloizitePbZn(VO4)(OH)
8.BH.40MottramitePbCu(VO4)(OH)
8.BH.40PyrobelonitePbMn2+(VO4)(OH)
8.BH.45BayldonitePbCu3(AsO4)2(OH)2
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2
8.BH.50PaganoiteNiBi(AsO4)O
8.BH.55JagoweriteBaAl2(PO4)2(OH)2
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4
8.BH.65LeningraditePbCu3(VO4)2Cl
22.1.1AmblygoniteLiAl(PO4)F
22.1.2LacroixiteNaAl(PO4)F
22.1.3NatrophosphateNa7(PO4)2F · 19H2O
22.1.5NacaphiteNa2Ca(PO4)F
22.1.6ArctiteNa2Ca4(PO4)3F
22.1.7NefedoviteNa5Ca4(PO4)4F
22.1.9FluorapatiteCa5(PO4)3F
22.1.10HerderiteCaBePO4(F,OH)
22.1.11IsokiteCaMg(PO4)F
22.1.13BabefphiteBaBePO4(F,OH)
22.1.14FluelliteAl2(PO4)F2(OH) · 7H2O
22.1.15MinyuliteKAl2(PO4)2(OH,F) · 4H2O
22.1.16MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2O
22.1.17BøggilditeNa2Sr2Al2PO4F9
22.1.18FluorstrophiteSrCaSr3(PO4)3F
22.1.19ViitaniemiiteNa(Ca,Mn2+)Al(PO4)(F,OH)3
22.1.20VäyryneniteMn2+Be(PO4)(OH,F)
22.1.21MaxwelliteNaFe3+(AsO4)F
22.1.22Wagnerite(Mg,Fe2+)2(PO4)F
22.1.23Triplite(Mn2+,Fe2+)2(PO4)(F,OH)
22.1.24Magniotriplite(Mg,Fe2+,Mn2+)2PO4F
22.1.25Zwieselite(Fe2+,Mn2+)2(PO4)F
22.1.26McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2O
22.1.27RichelliteCaFe23+(PO4)2(OH,F)2
22.1.28SvabiteCa5(AsO4)3F
22.1.29TilasiteCaMg(AsO4)F
22.1.30Johnbaumite-MCa5(AsO4)3OH
22.1.31DurangiteNaAl(AsO4)F

Other Names for Panasqueiraite

Name in Other Languages:

Other Information

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 Panasqueiraite

Reference List:
Isaacs, A. M. & Peacor, D. R. (1981): Panasqueiraite, a new mineral: the hydroxyl-equivalent of isokite. Canadian Mineralogist, 19, 389-392.

American Mineralogist (1982): 67: 859.

Canadian Mineralogist (1985): 23: 131.

Mila, C.C., Salvan, C.M. & Fabre, J. (2014): Panasqueira: Neufunde und Neubestimmungen. Lapis, 39 (7/8), 54-63.

Internet Links for Panasqueiraite

mindat.org URL:
https://www.mindat.org/min-3073.html
Please feel free to link to this page.
Specimens:
The following Panasqueiraite specimens are currently listed for sale on minfind.com.

Localities for Panasqueiraite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Portugal (TL)
 
  • Castelo Branco District
    • Covilhã
Canadian Mineralogist(1981), 19, 389-392 and Canadian Mineralogist(1985), 23, 131 errata; American Mineralogist, Volume 67, pages 854-860, l982; Mila, C.C., Salvan, C.M. & Fabre, J. (2014): Panasqueira: Neufunde und Neubestimmungen. Lapis, 39 (7/8), 54-63.
      • São Francisco de Assis
Mineral and/or Locality  
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