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Panasqueiraite

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Formula:
CaMg(PO4)(OH,F)
Colour:
Pink
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.27
Crystal System:
Monoclinic
Member of:
Name:
Named for the type locality of Panasqueira, Portugal.
Tilasite Group, OH-analogue of isokite.

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


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Classification of PanasqueiraiteHide

Approved
Approval Year:
1978
First Published:
1981
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 PanasqueiraiteHide

Vitreous
Transparency:
Translucent
Colour:
Pink
Streak:
White
Hardness:
Cleavage:
Poor/Indistinct
{010} poor.
Density:
3.27 g/cm3 (Measured)    3.22 g/cm3 (Calculated)

Optical Data of PanasqueiraiteHide

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
Pleochroism:
Non-pleochroic

Chemical Properties of PanasqueiraiteHide

Formula:
CaMg(PO4)(OH,F)
IMA Formula:
CaMgPO4(OH)

Crystallography of PanasqueiraiteHide

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 V:
365.21 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.20 (67)
3.02 (86)
2.783 (31)
2.626 (100)
2.584 (45)
1.722 (33)
1.658 (30)

Type Occurrence of PanasqueiraiteHide

General Appearance of Type Material:
Massive fined grained aggregates
Place of Conservation of Type Material:
Department of Geological Sciences, University of Michigan, Ann Arbor, Michigan.
National Museum of Natural History, Washington, D.C., USA, 144521.
Geological Setting of Type Material:
Hydrothermal tin-tungsten deposit.
Reference:
Isaacs, A.M., Peacor, D.R. (1981) Panasqueiraite, a new mineral: the OH-equivalent of isokite. Canadian Mineralogist: 19: 389-392.

Synonyms of PanasqueiraiteHide

Other Language Names for PanasqueiraiteHide

Relationship of Panasqueiraite to other SpeciesHide

Member of:
Other Members of this group:
DurangiteNaAl(AsO4)FMon. 2/m : B2/b
IsokiteCaMg(PO4)FMon. 2/m : B2/b
KononoviteNaMg(SO4)FMon. 2/m : B2/b
LacroixiteNaAl(PO4)FMon. 2/m : B2/b
MaxwelliteNaFe3+(AsO4)FMon.
TilasiteCaMg(AsO4)FMon. m : Bb

Common AssociatesHide

Associated Minerals Based on Photo Data:
Wagnerite3 photos of Panasqueiraite associated with Wagnerite on mindat.org.
Muscovite2 photos of Panasqueiraite associated with Muscovite on mindat.org.
Chalcopyrite2 photos of Panasqueiraite associated with Chalcopyrite on mindat.org.
Ferberite1 photo of Panasqueiraite associated with Ferberite on mindat.org.
Siderite1 photo of Panasqueiraite associated with Siderite on mindat.org.
Quartz1 photo of Panasqueiraite associated with Quartz on mindat.org.
Arsenopyrite1 photo of Panasqueiraite associated with Arsenopyrite on mindat.org.
Pyrite1 photo of Panasqueiraite associated with Pyrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
8.BH.10DurangiteNaAl(AsO4)FMon. 2/m : B2/b
8.BH.10IsokiteCaMg(PO4)FMon. 2/m : B2/b
8.BH.10LacroixiteNaAl(PO4)FMon. 2/m : B2/b
8.BH.10MaxwelliteNaFe3+(AsO4)FMon.
8.BH.10TilasiteCaMg(AsO4)FMon. m : Bb
8.BH.15DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2Mon. 2/m : P21/b
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20PerloffiteBa(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20JohntomaiteBaFe2+2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.25Bertossaite(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4Orth.
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
8.BH.30CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.30SewarditeCaFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.35AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35CobaltaustiniteCaCo(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GabrielsonitePbFe(AsO4)(OH)Orth. mm2 : Pmc21
8.BH.35NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.40ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
8.BH.40DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.45BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2Mon. 2/m : B2/m
8.BH.50PaganoiteNiBi(AsO4)OTric.
8.BH.55JagoweriteBaAl2(PO4)2(OH)2Tric.
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
8.BH.65LeningraditePbCu3(VO4)2ClOrth. mmm (2/m 2/m 2/m) : Ibam

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

41.5.6.1TilasiteCaMg(AsO4)FMon. m : Bb
41.5.6.2IsokiteCaMg(PO4)FMon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.1.1AmblygoniteLiAl(PO4)FTric. 1 : P1
22.1.2LacroixiteNaAl(PO4)FMon. 2/m : B2/b
22.1.3NatrophosphateNa7(PO4)2F · 19H2OIso. m3m (4/m 3 2/m) : Fd3c
22.1.5NacaphiteNa2Ca(PO4)FMon. 2/m : P21/b
22.1.6ArctiteNa2Ca4(PO4)3FTrig. 3m (3 2/m) : R3m
22.1.7NefedoviteNa5Ca4(PO4)4FTric.
22.1.9FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
22.1.10HerderiteCaBePO4(F,OH)Mon. 2/m
22.1.11IsokiteCaMg(PO4)FMon. 2/m : B2/b
22.1.13BabefphiteBaBePO4(F,OH)Tet.
22.1.14FluelliteAl2(PO4)F2(OH) · 7H2OOrth. mmm (2/m 2/m 2/m) : Fddd
22.1.15MinyuliteKAl2(PO4)2(OH,F) · 4H2OOrth. mm2 : Pba2
22.1.16MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2OMon. 2/m
22.1.17BøggilditeNa2Sr2Al2PO4F9Mon.
22.1.18FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
22.1.19ViitaniemiiteNa(Ca,Mn2+)Al(PO4)(F,OH)3Mon.
22.1.20VäyryneniteMn2+Be(PO4)(OH,F)Mon. 2/m : P21/b
22.1.21MaxwelliteNaFe3+(AsO4)FMon.
22.1.22Wagnerite(Mg,Fe2+)2(PO4)FMon. 2/m : P21/b
22.1.23Triplite(Mn2+,Fe2+)2(PO4)(F,OH)Mon. 2/m
22.1.24Magniotriplite(Mg,Fe2+,Mn2+)2PO4FMon.
22.1.25Zwieselite(Fe2+,Mn2+)2(PO4)FMon. 2/m : P21/b
22.1.26McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
22.1.27RichelliteCaFe3+2(PO4)2(OH,F)2Amor.
22.1.28SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
22.1.29TilasiteCaMg(AsO4)FMon. m : Bb
22.1.30Johnbaumite-MCa5(AsO4)3OHMon. 2/m : P21/m
22.1.31DurangiteNaAl(AsO4)FMon. 2/m : B2/b

Fluorescence of PanasqueiraiteHide

Other InformationHide

Notes:
Blue cathodoluminescence in an electron beam at a 12 kV potential.
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 PanasqueiraiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Isaacs, A.M., Peacor, D.R. (1981) Panasqueiraite, a new mineral: the OH-equivalent of isokite. Canadian Mineralogist: 19: 389-392.
Fleischer, M., Chao, G.Y., Mandarino, J.A. (1982) New mineral names. American Mineralogist: 67: 854-860.
Isaacs, A.M., Peacor, D.R. (1985) Panasqueiraite, a new mineral: the OH-equivalent of isokite. Erratum. The Canadian Mineralogist: 23: 131-131.
Mila, C.C., Salvan, C.M., Fabre, J. (2014) Panasqueira: Neufunde und Neubestimmungen. Lapis: 39(7/8): 54-63.

Internet Links for PanasqueiraiteHide

Localities for PanasqueiraiteHide

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.
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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