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Pahasapaite

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About PahasapaiteHide

Formula:
Li8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O
Colour:
Colourless, light pink, Yellow
Lustre:
Vitreous
Hardness:
Specific Gravity:
2.28
Crystal System:
Isometric
Member of:
Name:
Named from the Dakota Sioux Indian word 'Pahasapa' for the Black Hills.
Zeolitic structure. A natural Be- and P-bearing zeolite and in these terms related to weinebeneite, wilancookite, and probably limousinite.


Classification of PahasapaiteHide

Approved
8.CA.25

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
A : With small and large/medium cations
Dana 7th ed.:
40.5.7.1
40.5.7.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
5 : AXO4·xH2O
19.3.9

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of PahasapaiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless, light pink, Yellow
Streak:
White
Hardness:
4½ on Mohs scale
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.28 g/cm3 (Measured)    2.24 g/cm3 (Calculated)

Optical Data of PahasapaiteHide

Type:
Isotropic

Chemical Properties of PahasapaiteHide

Formula:
Li8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O
IMA Formula:
Li8(Ca,Li,K)10Be24(PO4)24 · 38H2O

Crystallography of PahasapaiteHide

Crystal System:
Isometric
Class (H-M):
2 3 - Tetartoidal
Space Group:
I2 3
Cell Parameters:
a = 13.781 Å
Unit Cell V:
2 ų
Z:
1

Type Occurrence of PahasapaiteHide

Synonyms of PahasapaiteHide

Other Language Names for PahasapaiteHide

Relationship of Pahasapaite to other SpeciesHide

Member of:
Other Members of this group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2OMon. 2 : P21
AmiciteK2Na2Al4Si4O16 · 5H2OMon. 2
Ammonioleucite(NH4)(AlSi2O6)Tet.
AnalcimeNa(AlSi2O6) · H2OTric. 1 : P1
Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
BikitaiteLiAlSi2O6 · H2OTric. 1 : P1
BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma
Brewsterite-Ba(Ba,Sr)[Al2Si6O16] · 5H2OMon. 2/m : P21/m
Brewsterite-Sr(Sr,Ba,Ca)[Al2Si6O16] · 5H2O
Chabazite-Levyne SubgroupA subgroup of the Zeolite Group.
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
ClinoptiloliteNote on the distinguishing differences between clinoptilolite and heulandite (http://rruff.
CowlesiteCaAl2Si3O10 · 6H2OOrth.
Dachiardite-Ca(Ca,Na2,K2)5Al10Si38O96 · 25H2OMon.
Dachiardite-KK4(Si20Al4O48)·13H2OMon.
Dachiardite-Na(Na2,Ca,K2)5Al10Si38O96 · 25H2OMon.
DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
EdingtoniteBa[Al2Si3O10] · 4H2O
EpistilbiteCaAl2Si6O16 · 5H2OMon.
ErioniteThis name now refers to a group of related minerals.
Faujasite
Faujasite-Ca(Ca,Na2,Mg)3.5[Al7Si17O48] · 32H2OIso.
FerrieriteZeolite Group.
FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2OMon. 2/m : P21/b
Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2OTric. 1 : P1
Garronite-CaNa2Ca5Al12Si20O64 · 27H2OTet. 4 2m : I4m2
GaultiteNa4Zn2Si7O18 · 5H2OOrth. mm2 : Fdd2
Gismondine-BaBa2Al4Si4O16 · 4-6H2O
Gismondine-CaCaAl2Si2O8 · 4H2O
GmeliniteIn 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth.
GoosecreekiteCa[Al2Si6O16] · 5H2OMon.
GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2OOrth.
Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2OMon. 2/m : P21/m
Heulandite subgroupNote on the distinguishing differences between heulandite and clinoptilolite (http://rruff.
HsianghualiteCa3Li2(Be3Si3O12)F2Iso. 4 3 2 : I41 3 2
KirchhoffiteCs(BSi2O6)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
LaumontiteCaAl2Si4O12 · 4H2OMon. 2/m : B2/m
LovdariteK2Na6Be4Si14O36 · 9H2OOrth. mm2
MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
MartinandresiteBa2(Al4Si12O32)·10H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
Mazzite-Mg(Mg,K,Ca)5(Si26Al10)O72 · 28H2OHex.
Mazzite-NaNa8[Al4Si14O36]2 · 30H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2OOrth.
Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth.
Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
MutinaiteNa3Ca4Si85Al11O192 · 60H2OOrth.
NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
Natrolite SubgroupA subgroup of the Zeolite Group.
OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
ParthéiteCa2(Si4Al4) O15 (OH)2•4H2OMon. 2/m : B2/b
Paulingite-Ca(Ca,K,Na,Ba,◻)10 (Si, Al)42O84•34H2OIso.
Paulingite-K(K2,Ca,Na2,Ba)5[Al10Si35O90] · 45H2OIso.
Paulingite-Na(Na2,K2,Ca,Ba)5[Al10Si35O90] · 45H2OIso.
PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex.
PhillipsiteZeolite Group.
Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m (4/m 3 2/m) : Ia3d
RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet.
Stilbite subgroupThis name now refers to the zeolite subgroup including the Barrerite - Stilbite-Ca - ...
Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2OOrth.
Thomsonite-CaNaCa2[Al5Si5O20] · 6H2OOrth. mmm (2/m 2/m 2/m)
Thomsonite-SrNa(Sr,Ca)2[Al5Si5O20] · 7H2OOrth. mmm (2/m 2/m 2/m)
Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2OIso. m3m (4/m 3 2/m) : Fm3m
UM1996-38-SiO:AlCaHNaNa-Ca-Al-Si-O-H
UM1999-33-SiO:AlHKNaK7Na5Al12Si20O64•24H2O
WairakiteCa(Al2Si4O12) · 2H2OMon. 2/m
WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon.
Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex.
WillhendersoniteKCa[Al3Si3O12] · 5H2OTric.
YugawaraliteCaAl2Si6O16 · 4H2OMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Pahasapaite associated with TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O
1 photo of Pahasapaite associated with EnglishiteK3Na2Ca10Al15(PO4)21(OH)7 · 26H2O

Related Minerals - Nickel-Strunz GroupingHide

8.CA.DavidlloyditeZn3(AsO4)2·4H2O Tric. 1 : P1
8.CA.ApexiteNaMg(PO4)·9H2OTric. 1 : P1
8.CA.BrandãoiteBeAl2(PO4)2(OH)2(H2O)5Tric. 1 : P1
8.CA.05FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
8.CA.05ParafransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OTric. 1 : P1
8.CA.10EhrleiteCa4Be3Zn2(PO4)6 · 9H2OTric. 1 : P1
8.CA.15FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
8.CA.20GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
8.CA.20MccrillisiteNaCs(Be,Li)Zr2(PO4)4 · 1-2H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.CA.20SelwyniteNaK(Be,Al)Zr2(PO4)4 · 2H2OTet.
8.CA.30HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.30ArsenohopeiteZn3(AsO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.35WarikahniteZn3(AsO4)2 · 2H2OTric. 1 : P1
8.CA.40PhosphophylliteZn2Fe(PO4)2 · 4H2OMon. 2/m : P21/b
8.CA.45ParascholziteCaZn2(PO4)2 · 2H2OMon.
8.CA.45ScholziteCaZn2(PO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
8.CA.50KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m
8.CA.55PushcharovskiteK0.6Cu18(AsO4)(HAsO4)10(H2AsO4)4(OH)9.6·18.6H2OTric.
8.CA.60ProsperiteCa2Zn4(AsO4)4 · H2OMon.
8.CA.65GengenbachiteKFe3+3(HPO4)4(H2PO4)2 · 6H2OTrig. 3m : P3 1c
8.CA.70ParahopeiteZn3(PO4)2 · 4H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.3HurlbutiteCaBe2(PO4)2Mon.
19.3.4HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
19.3.12RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
19.3.19BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1

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 PahasapaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Neues Jahrbuch für Mineralogie, Monatshefte (1987): 10: 433-440.
Rouse R.C., Peacor D.R., Merlino S.(1989): Crystal structure of pahasapaite, a beryllophosphate mineral with a distorted zeolite rho framework. American Mineralogist: 74: 1195-1202.
Parise, J.B., Corbin, D.R., Abrams, L., Northrup, P., Rakovan, J., Nenoff, T.M., and Stucky, G.D. (1994) Structural relationships between some BePO-, BeAsO-, and AlSiO-RHO frameworks. Zeolites, 14:25-34.

Internet Links for PahasapaiteHide

Localities for PahasapaiteHide

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)
 
  • South Dakota
    • Custer Co.
      • Custer Mining District
        • Fourmile
American Mineralogist, Volume 74, pages l195-1202, 1989
 
Mineral and/or Locality  
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