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Brushite

A valid IMA mineral species - grandfathered
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Ca(PO3OH) · 2H2O
Colour:
Colorless, light yellow; colorless in transmitted light.
Lustre:
Sub-Vitreous, Pearly, Earthy
Hardness:
2½
Specific Gravity:
2.30 - 2.33
Crystal System:
Monoclinic
Member of:
Gypsum Supergroup
Name:
Named by Gideon E. Moore in 1865 in honor of American mineralogist George Jarvis Brush (December 15, 1831 Brooklyn, NY, USA - February 6, 1912 New Haven, CT, USA), Professor, Yale University.
Type Locality:
ⓘAves Island, Nueva Esparta, Venezuela
Isostructural with:
Gypsum
The phosphate analogue ofpharmacolite.


Unique Identifiers

Classification of Brushite

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
Dana 8th ed.:
39.1.1.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
1 : A[HXO4]·xH2O
Hey's CIM Ref.:
19.4.3

19 : Phosphates
4 : Phosphates of Ca

Mineral Symbols
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages.
Colour:
Colorless, light yellow; colorless in transmitted light.
Streak:
White
Hardness:
2½ onMohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {010} and {001}, perfect.
Density:
2.30 - 2.33 g/cm3 (Measured)    2.32 g/cm3 (Calculated)
Comment:
2.326 (artificial crystals).

Optical Data of Brushite
Surface Relief:
Moderate
Dispersion:
r >v , crossed
Optical Extinction:
X ∧ c = 30°; Z = b.
Pleochroism:
Non-pleochroic

Chemistry of Brushite

Crystallography of Brushite
Geological Setting of Type Material:
Cave guano deposit.

Synonyms of Brushite

Other Language Names for Brushite

Relationship of Brushite to other Species
Other Members of Gypsum Supergroup:
Churchite-(Y)Y(PO4) · 2H2OMon. 2/m :B2/b
GypsumCaSO4 · 2H2OMon. 2/m
PharmacoliteCa(HAsO4) · 2H2OMon.m

Common AssociatesMon.m :Bb8.CJ.DobšináiteCa2Ca(AsO4)2 · 2H2OMon. 2/m :P21/b8.CJ.SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m :B2/b8.CJ.CaesiumpharmacosideriteCsFe4[(AsO4)3(OH)4] · 4H2OIso.43m :P43m8.CJ.JeankempiteCa5(AsO4)2(HAsO4)2 · 7H2OTric.1 :P18.CJ.05Stercorite(NH4)Na(PO3OH) · 4H2OTric.1 :P18.CJ.10Swaknoite(NH4)2Ca(PO3OH)2 · H2OOrth.8.CJ.10Mundrabillaite(NH4)2Ca(PO3OH)2 · H2OMon.m :Pm8.CJ.15NabaphiteNaBaPO4 · 9H2OIso. 23 :P2138.CJ.15NastrophiteNa(Sr,Ba)PO4 · 9H2OIso. 23 :P2138.CJ.20HaidingeriteCaHAsO4 · H2OOrth.mmm(2/m2/m2/m) :Pbcn8.CJ.25Rhabdophane-(Y)YPO4 · H2OHex. 622 :P62228.CJ.25VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m :P21/b8.CJ.27Churchite-(Dy)(Dy,Sm,Gd,Nd)PO4 · 2H2OMon.8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric.1 :P18.CJ.35FulbrightiteCa(VO)2(AsO4)2 · 4H2OTric. 1 :P18.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OTrig. 3m :R3c8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2OTric.1 :P18.CJ.40PhaunouxiteCa3(AsO4)2 · 11H2OTric.8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2OHex. 622 :P62228.CJ.45Smirnovskite(Th,Ca)PO4 · nH2OHex. 622 :P62228.CJ.45Rhabdophane-(Ce)Ce(PO4) · 0.6H2OTrig. 32 :P31218.CJ.45Rhabdophane-(La)La(PO4) · H2OHex. 622 :P62228.CJ.45Rhabdophane-(Nd)Nd(PO4) · H2OHex. 622 :P62228.CJ.45Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2OHex. 622 :P62228.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2OHex. 622 :P62228.CJ.45ŠtěpiteU(AsO3OH)2 · 4H2OTet. 4/mmm(4/m2/m2/m) :I41/acd8.CJ.47VysokýiteU4+[AsO2(OH)2]4 · 4H2OTric.1 :P18.CJ.50Churchite-(Y)Y(PO4) · 2H2OMon. 2/m :B2/b8.CJ.50ArdealiteCa2(PO3OH)(SO4) · 4H2OMon.m :Bb8.CJ.50PharmacoliteCa(HAsO4) · 2H2OMon.m8.CJ.50Churchite-(Nd)Nd(PO4) · 2H2OMon.8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.8.CJ.60DorfmaniteNa2(PO3OH) · 2H2OOrth.mmm(2/m2/m2/m) :Pbca8.CJ.65SincositeCa(VO)2(PO4)2 · 5H2OTet. 4/mmm(4/m2/m2/m) :P42/nnm8.CJ.65BariosincositeBa(VO)2(PO4)2 · 4H2OTet.8.CJ.70CatalanoiteNa2(PO3OH) · 8H2OOrth.mmm(2/m2/m2/m) :Ibca8.CJ.75GuériniteCa6(HAsO4)3(AsO4)2 · 10.5H2OMon. 2/m :P21/b8.CJ.85Ningyoite(U,Ca,Ce)2(PO4)2 · 1-2H2OOrth.

Fluorescence of Brushite

Other Information
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    • References for BrushiteⓘOran ProvinceKorbel et al. (1999)Palache et al. (1951)
    Anguilla
     
    Palache et al. (1951)
    Antarctica
     
    Gore et al. (2000)Barczuk A. & Tatur A. 2003: BIOGENIC ...
    Argentina
     
    Benedetto et al. (1998)
    Aruba
     
    Stienstra (1985)
    Australia
     
    Snow et al. (2014)Palache et al. (1951)+1 other referenceHelictite 13:19-33Caves: processes+1 other referenceBridge (1974)R. Bottrill
    Austria
     
    F. Brandstätter (1996)Niedermayr (1997)+2 other referencesPichler (2009)Pichler (2009)Niedermayr et al. (1995)Exel (1993)Strasser (1989)Kolitsch et al. (2019)Annalen 1999A.Alker (1968)
    Bahamas
     
    Onac B.P. et al. (2001)+1 other referenceOnac B.P. et al. (2001)
    Belgium
     
    Hatert et al. (2002)Van Tassel (1944)+1 other reference
    Canada
     
    Robinson et al. (1992)Robinson et al. (1992)Handbook for Mineralogy
    Chile
     
    Pieczonka et al. (2017)
    Denmark
     
    Claus Hedegaard collection
    Ethiopia
     
    López-García et al. (2020)
    Finland
     
    Hytönen (1999)
    France
     
    Lacroix (1907)Palache et al. (1951)+1 other referencePalache et al. (1951)Audra et al. (2019)Palache et al. (1951)
    Germany
     
    Belendorff (2021)Wittern (2001)Blaß et al. (1995) ...Gröbner et al. (2007)Lapis 30 (7/8)Rüger (1995)Ullrich (2018)
    Hungary
     
    Audra et al. (2019)Sándor et al. (2005)USGS Open-File Report 02–156–A+1 other reference
    Iran
     
    Amin et al. (2022)
    Ireland
     
    Ryback et al. (1988)
    Italy
     
    Dell'Anna et al. (1989)Balenzano et al. (1984)+1 other referenceBalenzano et al. (1974)Dell'Anna et al. (1989)Dell'Anna et al. (1989)Dell'Anna et al. (1989)Dell'Anna et al. (1989)Cancian (1984)Balestra et al. (UK report)Audra et al. (2019)Audra et al. (2019)
    Japan
     
    - (n.d.)Matsubara & Chiba (1982)Nobuhide Sawamura & Hitoshi Momoi: ...+1 other reference
    Kenya
     
    Forti et al. (2004)
    Kiribati
     
    King (n.d.)King (n.d.)
    Malaysia
     
    Bridge et al. (1983)
    Mexico
     
    Forti (2006)Forti (2006)
    Morocco
     
    Walenta (1981)
    Namibia
     
    Mineralogical Society of America - ...Dill et al. (2002)Dunn (1991)
    Nicaragua
     
    Hynek et al. (2013)
    Poland
     
    Łukasz Kruszewski PXRD & EPMA data (2018)
    Portugal
     
    Neiva et al. (2000)
    Romania
     
    Onac et al. (1995)Tămaş et al. (2011)al României (2003)Dumitras D et al. (2004)Marincea et al. (2006)European Journal of Mineralogy+5 other referencesOnac (2009)B. Onac et al (2009, July)A. Januszewska PXRD data / Januszewska et al. (in preparation)Neacșu Antonela (2007)Marincea et al. (2004)+1 other referenceOnac et al. (2003)Tudor Tămaș (2010)minerals-of-the-carpathians.eu (2008)Hîrtopanu (1997)+1 other reference
    Russia
     
    Sokol et al. (2022)[Der Aufschluss 1995:4 p163-180]+1 other reference[Der Aufschluss 1995:4 p163-180]Левочская et al. (2021)
    Slovakia
     
    Koděra (1986)Koděra (1986)Koděra (1986)Kettner (1948)+2 other referencesDuda et al. (1992)Koděra (1986)
    South Africa
     
    Cairncross et al. (1995)Martini et al. (1978)+1 other referenceMartini (1997)
    South Korea
     
    Jun+4 other references
    Spain
     
    B. Onac et al (2009)Onac et al. (2005)Onac et al. (2014)Onac et al. (2005)Bareche (2005)Benavente+2 other references
    Switzerland
     
    Stalder et al. (1998)Stalder et al. (1998)
    UK
     
    Golley et al. (1995)
    USA
     
    www.caves.org+1 other referenceWalker (1988)Handbook for MineralogyWhitmore et al. (2004)Palache et al. (1951)Wise (1997)Handbook for MineralogyMuray et al. (1956)
    Venezuela
     
    Urbani (1996)Urbani (1996)Urbani (1996)Palache et al. (1951)Franco Urbani (2009)
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