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Parahopeite

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About ParahopeiteHide

Formula:
Zn3(PO4)2 · 4H2O
Colour:
Colourless; colourless in transmitted light.
Lustre:
Vitreous, Pearly
Hardness:
Specific Gravity:
3.31
Crystal System:
Triclinic
Member of:
Name:
In allusion to its polymorphic relationship to hopeite.
Dimorph of:
The P analogue of davidlloydite.


Classification of ParahopeiteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.CA.70

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
A : With small and large/medium cations
40.3.3.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
19.6.4

19 : Phosphates
6 : Phosphates of Zn

Pronounciation of ParahopeiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of ParahopeiteHide

Vitreous, Pearly
Transparency:
Transparent
Comment:
Lustre somewhat pearly on the cleavage.
Colour:
Colourless; colourless in transmitted light.
Hardness:
3½ on Mohs scale
Cleavage:
Perfect
On {010}, perfect.
Density:
3.31 g/cm3 (Measured)    3.304 g/cm3 (Calculated)

Optical Data of ParahopeiteHide

Type:
Biaxial (+)
RI values:
nα = 1.614 nβ = 1.625 nγ = 1.637
2V:
Measured: 90°
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v moderately strong
Comments:
2V nearly 90°.

Chemical Properties of ParahopeiteHide

Formula:
Zn3(PO4)2 · 4H2O

Crystallography of ParahopeiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.76 Å, b = 7.54 Å, c = 5.27 Å
α = 93.44°, β = 91.2°, γ = 91.4°
Ratio:
a:b:c = 0.764 : 1 : 0.699
Unit Cell V:
228.34 ų (Calculated from Unit Cell)
Morphology:
Crystals elongated [001] and tabular {100}; frequently grouped in sub-parallel aggregates or fan-like or tufted groups.
Twinning:
On {100}, polysynthetic, common.

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of ParahopeiteHide

Other Language Names for ParahopeiteHide

German:Parahopeit
Simplified Chinese:副磷锌矿
Spanish:Parahopeita
Traditional Chinese:副磷鋅礦

Relationship of Parahopeite to other SpeciesHide

Member of:
Other Members of this group:
ArsenohopeiteZn3(AsO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
DavidlloyditeZn3(AsO4)2·4H2O Tric. 1 : P1
HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
NizamoffiteMn2+Zn2(PO4)2(H2O)4Orth. mmm (2/m 2/m 2/m) : Pbcm
Unnamed (Mg-analogue of Hopeite)Mg3(PO4)2 · 4H2O

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hopeite15 photos of Parahopeite associated with Hopeite on mindat.org.
Tarbuttite6 photos of Parahopeite associated with Tarbuttite on mindat.org.
Phosphophyllite5 photos of Parahopeite associated with Phosphophyllite on mindat.org.
Scholzite4 photos of Parahopeite associated with Scholzite on mindat.org.
Pyromorphite3 photos of Parahopeite associated with Pyromorphite on mindat.org.
Collinsite1 photo of Parahopeite associated with Collinsite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CA.DavidlloyditeZn3(AsO4)2·4H2O Tric. 1 : P1
8.CA.ApexiteNaMg(PO4)·9H2OTric. 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.25PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
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.
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

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.6.1TarbuttiteZn2(PO4)(OH)Tric. 1 : P1
19.6.2SpenceriteZn4(PO4)2(OH)2 · 3H2OMon. 2/m : P2/b
19.6.3HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
19.6.5Veszelyite(Cu,Zn)2Zn(PO4)2 · 2H2OMon. 2/m : P21/b
19.6.6Kipushite(Cu,Zn)5Zn(PO4)2(OH)6 · H2OMon.
19.6.7ScholziteCaZn2(PO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
19.6.8ParascholziteCaZn2(PO4)2 · 2H2OMon.
19.6.9EhrleiteCa4Be3Zn2(PO4)6 · 9H2OTric. 1 : P1
19.6.10Faustite(Zn,Cu)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.6.11Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
19.6.12JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
19.6.13SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
19.6.14PhosphophylliteZn2Fe(PO4)2 · 4H2OMon. 2/m : P21/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 ParahopeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Spencer (1908) Mineralogical Magazine: 15: 18.
Walker (1918) University of Toronto Studies, Geology Series, no. 10: 16.
Ledoux, Walker, and Wheatley (1919) Mineralogical Magazine: 18: 101.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 117.
Wolfe (1940) American Mineralogist: 25: 788.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 733-734.
Zeitschrift für Kristallographie: 130: 261-266.
Mineralogical Magazine (1974): 39: 684-695.

Internet Links for ParahopeiteHide

Localities for ParahopeiteHide

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.
Australia
 
  • South Australia
    • Flinders Ranges
      • South Flinders Ranges
        • Martins Well
Johnston, C.W . & Hill, R.J. (1978): Zinc phosphates at Reaphook Hill South Australia. Mineralogical Record 9,(1), 20-24; SA Geodata Database - Mineral Deposit Details Deposit Number: 3220
Canada
 
  • British Columbia
    • Nelson Mining Division
      • Salmo
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 734 & 753.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Paradis, S., Keevil, H., Simandl, G. J., & Raudsepp, M. (2015). Carbonate-hosted nonsulphide Zn–Pb mineralization of southern British Columbia, Canada. Mineralium Deposita, 50(8), 923-951.
China
 
Lairen Lai and Nicheng Shi (1984): Acta Petrologica Mineralogica et Analytica 3(1), 40-46
Germany
 
  • Bavaria
    • Upper Palatinate
      • Pleystein
Dill, H.G., Weber, B. (2009), Pleystein-City on Pegmatite, 4th International Symposium on Granitic Pegmatites, Recife, Brazil.
      • Waidhaus
Dill, H.G. (2009) The Hagendorf-Pleystein phosphate pegmatites (NE Bavaria, Germany) - A mineralogical, chronological and sedimentological overview. Estudos Geológicos: 19(2): 117-120.
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990; Dill H.G.: "Mineralogical and chemical composition of the Hagendorf-North Pegmatite, SE Germany - a monographic study", J. Min. Geochem, 2013
http://www.berthold-weber.de/h_miner.htm
  • Hesse
    • Richelsdorf District
      • Nentershausen
        • Süß
          • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Lower Saxony
    • Harz
      • Clausthal-Zellerfeld
        • Bockswies veins
          • Oberschulenberg
Lapis, 11 (1), 9-18+42
UK
 
  • England
    • Cumbria
      • Allerdale
        • Caldbeck
          • Roughton Gill
Trevor F. Bridges, David Green, Michael S. Rumsey and C. Michael Leppington (2011) A review of the mineralisation of the Roughton Gill mines, Caldbeck Fells, Cumbria: Part 3 Roughton Gill Mine Journal of the Russell Society 14:3-23.
Cooper, M.P. and Stanley, C.J. (1991) Famous Mineral Localities: Pyromorphite Group Minerals from the Caldbeck Fells, Cumbria, England. Mineralogical Record, 22(2), 105-121.
    • North Yorkshire
      • Craven
        • Grassington
          • Grassington Moor
Dunham, Sir K. C. Geology of the North Pennine Orefield, Volume 2 Stainmore to Craven (2nd Edition), pp 199.
Zambia (TL)
 
  • Central Province
    • Kabwe District
      • Kabwe (Broken Hill)
Nature (1907) 77, 143; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 734; Mineralogical Record: 11: 339.
Mineral and/or Locality  
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