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Childrenite

A valid IMA mineral species
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Photos of Childrenite (257)Discuss Childrenite
Childrenite GallerySearch Photos of Childrenite
Edit ChildreniteAdd SynonymEdit CIF structuresClear Cache
Fe2+Al(PO4)(OH)2 · H2O
Colour:
Yellowish brown, brown, clove-brown
Lustre:
Vitreous, Sub-Vitreous, Resinous, Greasy
Hardness:
5
Specific Gravity:
3.11 - 3.19
Crystal System:
Orthorhombic
Name:
Named in 1823 by Henry J. Brooke in honor of John George Children [May 18, 1777 – January 1, 1852 Halstead, Kent, England, UK), English chemist, mineralogist, and zoologist; Keeper of minerals at the British Museum of Natural History.
Type Locality:
ⓘDevon, England, UK
Childrenite-Eosphorite Series.
The Fe2+ analogue ofeosphorite.

See also the relatedlefontite.

Visit gemdat.org forgemological information about Childrenite.



Unique Identifiers
First published:
1823
Type description reference:
Brooke, H.J.A. (1823) On some undescribed minerals. Childrenite. The Quarterly Journal of Science, Literature, and the Arts: 16: 274-277.

Classification of Childrenite

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1
Dana 8th ed.:
42.7.1.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Hey's CIM Ref.:
19.12.57

19 : Phosphates
12 : Phosphates of Mn

Mineral Symbols
Transparency:
Transparent, Translucent
Colour:
Yellowish brown, brown, clove-brown
Comment:
Colourless in transmitted light.
Streak:
White
Hardness:
5 onMohs scale
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Poor on {100}
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
3.11 - 3.19 g/cm3 (Measured)    3.13(1) g/cm3 (Calculated)

Optical Data of Childrenite
Surface Relief:
Moderate
Dispersion:
r > v strong
Optical Extinction:
X = a; Y = b; Z = c. In optically twined matrial Y ∧ c = 4°-8°.
Pleochroism:
Visible
Comments:
X= yellow
Y= pink
Z= pale pink to colourless

Chemistry of Childrenite
Common Impurities:
Ca,Mn

Chemical Analysis
Comment:
Bba2; possibly monoclinic pseudo-orthorhombic.

Crystallographic forms of Childrenite
Click on an icon to view
Childrenite no.1 - Goldschmidt (1913-1926)
Childrenite no.9 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided bywww.smorf.nl.

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Edge Lines |Miller Indices |Axes

Transparency
Opaque |Translucent |Transparent

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Along a-axis |Along b-axis |Along c-axis |Start rotation |Stop rotation

Crystal Structure
General Appearance of Type Material:
Small yellow crystals on quartz.
Place of Conservation of Type Material:
No defined type material.
Geological Setting of Type Material:
Low temperature hydrothermal veins.
Associated Minerals at Type Locality:
Quartz
Reference:
Brooke, H.J.A. (1823) On some undescribed minerals. Childrenite. The Quarterly Journal of Science, Literature, and the Arts: 16: 274-277.

Other Language Names for Childrenite

Relationship of Childrenite to other Species

Common AssociatesMon. 2/m :P21/b8.DD.Bettertonite[Al6(AsO4)3(OH)9(H2O)5] · 11H2OMon. 2/m :P21/b8.DD.VargiteMnCu2Mn2(AsO4)2(OH)4(H2O)4Mon. 2/m :P21/b8.DD.GaleaclolusiteAl6(AsO4)3(OH)9(H2O)4 · 8H2OOrth.mmm(2/m2/m2/m) :Pnma8.DD.05LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m :P21/m8.DD.05ChenevixiteCu2Fe3+2(AsO4)2(OH)4Mon. 2/m :P21/m8.DD.10AkrochorditeMnMn2Mn2(AsO4)2(OH)4(H2O)4Mon. 2/m :P21/b8.DD.10GuanacoiteMgCu2Mg2(AsO4)2(OH)4(H2O)4Mon. 2/m :P21/b8.DD.15UM1981-32-PO:FeHFe2+Fe3+6(PO4)4-x[PO3(OH)]x(OH)8 · 4H2O8.DD.15AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2OTric.1 :P18.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric.1 :P18.DD.15CoeruleolactiteTric.1 :P18.DD.15FaustiteZnAl6(PO4)4(OH)8 · 4H2OTric.1 :P18.DD.15PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2OTric.1 :P18.DD.15ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric.1 :P18.DD.15TurquoiseCuAl6(PO4)4(OH)8 · 4H2OTric.1 :P18.DD.20EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth.mmm(2/m2/m2/m) :Cmca8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.8.DD.20LefontiteFe2Al2Be(PO4)2(OH)6Orth.mmm(2/m2/m2/m) :Cmca8.DD.25KobokoboiteAl6(PO4)4(OH)6 · 11H2OTric.8.DD.30SmamiteCa2Sb(OH)4[H(AsO4)2] · 6H2OTric. 1 :P18.DD.35GutsevichiteAl3(PO4)2(OH)3 · 8H2OIso.8.DD.40Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.Orth.mmm(2/m2/m2/m) :Pbcm

Fluorescence of Childrenite

Other Information
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    • References for ChildreniteⓘPaprokLyckberg (2011)
    Argentina
     
    Kampf et al. (2010)Galliski et al. (2020)
    Australia
     
    Harrowfield et al. (1981)Pers. comm. from Peter Elliott and ...
    Austria
     
    Niedermayr et al. (1995)Niedermayr et al. (1995)Paar (1974)+1 other reference
    Bolivia
     
    Palache et al. (1951)+1 other reference
    Brazil
     
    Cassedanne et al. (1982)Richard Dale CollectionCassedanne (1983)+1 other referenceMenezes Filho et al. (2019)SILVEIRA et al. (2014)Cassedanne et al. (1981)Cassedanne et al. (1999)Moore et al. (1978)+1 other referenceJoan Viñals analysisHatert et al. (2017)Sergio Varvello collectionBetts (n.d.)Cassedanne (1983)Sergio Varvello collection+2 other referencesLuigi Chiappino data
    Canada
     
    Breasley et al. (2024)Richardson (1988)Robinson et al. (1992)150-152.+2 other referencesRobinson et al. (1992)
    China
     
    Rao et al. (2017)
    Czech Republic
     
    Uher et al. (1998)
    Europe
     
    Berbain et al. (2012)
    Finland
     
    Haapala (1966)
    France
     
    Nicolas et al. (1963)Forner et al. (1997)Berbain et al. (2012)Guitard (2010)
    Germany
     
    Dill et al. (2012)Dill et al. (2008)web.archive.org (2001)Kastning et al. (1996)+2 other referencesHandbook of Mineralogy (http://www.handbookofmineralogy.org/pdfs/lacroixite.pdf)+2 other references
    Japan
     
    Matsubara et al. (1980)
    Kosovo
     
    Féraud J. (1979)+1 other reference
    Namibia
     
    von Bezing (2007)Förch (1998)
    Portugal
     
    Cathelineau et al. (2024)Neiva et al. (2000)Alves (2016)Schnorrer-Köhler (1991)Maijer 1965Dias P et al. (2014)Neiva et al. (2000)
    Rwanda
     
    Lefèvre et al. (http://www.minsocam.org/msa/special/pig/PIG_articles/Elba%20Abstracts%2012%20Lefevre.pdf)+1 other referenceDaltry et al. (1998)
    Spain
     
    Calvo Rebollar et al. (2022)Calvo Rebollar (2015)Roda-Robles et al. (2010)Roda-Robles et al. (2012)Garate-Olave I et al. (2014)Weibel (1954)Fuertes-Fuente et al. (2001)Calvo Rebollar (2015)Fuertes-Fuente et al. (2001)Roza Llera+3 other referencesFuertes-Fuente et al. (2001)
    Sweden
     
    Hansen et al. (1994)Weisz et al. (2013)
    UK
     
    Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Day (1999)Hall (1868)+3 other referencesBraithwaite et al. (1982)Collection Richard De NulGolley et al. (1995)Kingsbury et al. (1957)+1 other referenceAmerican Mineralogist (1950)+2 other referencessample from the collection of Richard ...Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Rammelsberg (1852)+4 other referencesBraithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)Palache et al. (1951)+1 other referenceDana 7:II:938+1 other referenceBraithwaite et al. (1982)Braithwaite et al. (1982)Braithwaite et al. (1982)
    USA
     
    Rocks and Minerals (1999)+1 other referenceMoore (1973)Falster et al. (2019)+1 other referenceUSGS Bull 445+1 other referenceKing (n.d.)www.mindat.org (2003)+3 other referenceswww.mindat.org (2003)+1 other referenceTim BlakeHurlbut (1950)+1 other referenceT Mortimer collectionRocks & Min. 80:251Moore (1965)+4 other referencesRocks & Min.+2 other referencesThompson et al. (2022)Smith (2005)Kenny GayStaatz+4 other referencesRocks & Minerals: 60: 117.Campbell et al. (1985)Smith et al. (2000)Bosi et al. (2025)Smith et al. (2000)King (n.d.)
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