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Collinsite

A valid IMA mineral species - grandfathered
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About CollinsiteHide

01773320014946347067499.jpg
William H. Collins
Formula:
Ca2Mg(PO4)2 · 2H2O
Colour:
Light brown; light yellow-brown to colourless in transmitted light.
Lustre:
Silky
Hardness:
3 - 3½
Specific Gravity:
2.99
Crystal System:
Triclinic
Name:
Named by E. Poitevin and M.F. Connor in 1924 in honor of William Henry Collins (26 October 1878, near Chatsworth, Ontario, Canada - January 14, 1937, Ottawa, Ontario, Canada), geologist and Director, Geological Survey of Canada (1920-1936).

Unique IdentifiersHide

Mindat ID:
1109
Long-form identifier:
mindat:1:1:1109:5
GUID
(UUID V4):
f95c33ad-b116-4063-8e44-df5981441753

IMA Classification of CollinsiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First published:
1924

Classification of CollinsiteHide

8.CG.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
40.2.2.3

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
19.14.20

19 : Phosphates
14 : Phosphates of Fe and other metals

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
CollIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CollinsiteHide

Silky
Transparency:
Translucent
Colour:
Light brown; light yellow-brown to colourless in transmitted light.
Streak:
White
Hardness:
3 - 3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
On {001} and {010}, fair.
Density:
2.99 g/cm3 (Measured)    3.04 g/cm3 (Calculated)

Optical Data of CollinsiteHide

Type:
Biaxial (+)
RI values:
nα = 1.632 nβ = 1.642 nγ = 1.657
2V:
Measured: 80°
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v strong

Chemistry of CollinsiteHide

Mindat Formula:
Ca2Mg(PO4)2 · 2H2O

Crystallography of CollinsiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.73 Å, b = 6.78 Å, c = 5.44 Å
α = 97.29°, β = 108.56°, γ = 107.28°
Ratio:
a:b:c = 0.845 : 1 : 0.802
Unit Cell V:
185.49 ų (Calculated from Unit Cell)
Morphology:
Radial blades or lath-like fibers elongated [100], comprising layers.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006118CollinsiteHerwig S, Hawthorne F C (2006) The topology of hydrogen bonding in brandtite, collinsite and fairfieldite The Canadian Mineralogist 44 1181-11962006Rapid Creek, Yukon Territory, Canada0293
0012055CollinsiteBrotherton P D, Maslen E N, Pryce M W, White A H (1974) Crystal structure of collinsite Australian Journal of Chemistry 27 653-65619740293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.04 Å(100)
2.682 Å(90)
2.713 Å(80)
2.735 Å(60)
3.24 Å(50)
3.14 Å(50)
3.02 Å(50)
Comments:
Milgun Station, Australia. Data from Bridge and Pryce (1974).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]

Type Occurrence of CollinsiteHide

General Appearance of Type Material:
Layers in phosphate nodules, consisting of elongated blades to 1 cm in length by 0.5 mm in width.
Place of Conservation of Type Material:
No designated type material.
Geological Setting of Type Material:
Vein deposit in andesite.
Associated Minerals at Type Locality:

Other Language Names for CollinsiteHide

German:Collinsit
Simplified Chinese:磷钙镁石
科林斯石
Spanish:Collinsita
Traditional Chinese:磷鈣鎂石

Relationship of Collinsite to other SpeciesHide

Other Members of this group:
AnorthoroseliteCa2Co(AsO4)2 · 2H2OTric.
CassidyiteCa2Ni(PO4)2 · 2H2OTric.
FairfielditeCa2Mn2+(PO4)2 · 2H2OTric. 1 : P1
GaititeCa2Zn(AsO4)2 · 2H2OTric. 1 : P1
HilliteCa2Zn(PO4)2 · 2H2OTric. 1 : P1
MesseliteCa2Fe2+(PO4)2 · 2H2OTric. 1 : P1
NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1
ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric. 1 : P1
TalmessiteCa2Mg(AsO4)2 · 2H2OTric. 1 : P1
Unnamed (Fe2+-analogue of Parabrandtite)Ca2Fe2+(AsO4)2 · 2H2O
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
14 photos of Collinsite associated with ScholziteCaZn2(PO4)2 · 2H2O
13 photos of Collinsite associated with RobertsiteCa2Mn3+3(PO4)3O2 · 3H2O
12 photos of Collinsite associated with EosphoriteMn2+Al(PO4)(OH)2 · H2O
10 photos of Collinsite associated with HilliteCa2Zn(PO4)2 · 2H2O
10 photos of Collinsite associated with DolomiteCaMg(CO3)2
9 photos of Collinsite associated with Carbonate-rich HydroxylapatiteCa5(PO4,CO3)3(OH,O)
9 photos of Collinsite associated with ChildreniteFe2+Al(PO4)(OH)2 · H2O
9 photos of Collinsite associated with KovdorskiteMg2(PO4)(OH) · 3H2O
8 photos of Collinsite associated with BobierriteMg3(PO4)2 · 8H2O
7 photos of Collinsite associated with Rose QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

8.CG.Ca-HuréauliteCaMn5(PO4)4 · 4H2O
8.CG.FluckiteCaMn2+(AsO3OH)2 · 2H2OTric. 1 : P1
8.CG.DondoelliteCa2Fe(PO4)2 · 2H2OTric. 1 : P1
8.CG.AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.05CassidyiteCa2Ni(PO4)2 · 2H2OTric.
8.CG.05FairfielditeCa2Mn2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05MesseliteCa2Fe2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05AnorthoroseliteCa2Co(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05HilliteCa2Zn(PO4)2 · 2H2OTric. 1 : P1
8.CG.05Unnamed (Fe2+-analogue of Parabrandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.10BrandtiteCa2Mn2+(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2Co(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10Unnamed (Fe2+-analogue of Brandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.15FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15LotharmeyeriteCaZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15MawbyitePbFe3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15CobaltlotharmeyeriteCaCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePbCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCaNi2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15NickelschneebergiteBiNi2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
8.CG.15NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
8.CG.15MagnesiofluckiteCaMg(AsO3OH)2(H2O)2Tric. 1 : P1
8.CG.20GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
8.CG.20HelmutwinkleritePbZn2(AsO4)2 · 2H2OTric. 1 : P1
8.CG.20ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.20RappolditePbCo2(AsO4)2 · 2H2OTric. 1 : P1
8.CG.20PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric. 1 : P1
8.CG.20LukrahniteCaCuFe3+(AsO4)2(OH,H2O)2Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4 · H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
8.CG.25Armellinoite-(Ce)Ca4Ce4+(AsO4)4 · H2OTet. 4/m : I41/a
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1
8.CG.55IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.

Other InformationHide

Thermal Behaviour:
Gives a strong reaction for water in a closed tube.
Fuses, with intumescence, at 3 to a brownish slag.
Notes:
Readily soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for CollinsiteHide

References for CollinsiteHide

Reference List:

Localities for CollinsiteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Pring et al. (2000)
    • Flinders Ranges
      • South Flinders Ranges
        • Martins Well station
Johnston et al. (1978)
        • Wilmington
  • Western Australia
    • Meekatharra Shire
      • Milgun Station
Mineralogical Magazine 39 (1974) +1 other reference
Austria
 
  • Carinthia
    • Wolfsberg District
      • Frantschach-Sankt Gertraud
        • Brandrücken
Niedermayr et al. (1995)
Bahamas
 
  • San Salvador District
    • San Salvador Island
Onac B.P. et al. (2001) +1 other reference
Brazil
 
  • Minas Gerais
    • Itinga
      • Jenipapo pegmatite field
Sergio Varvello collection
      • Taquaral
Neil Hubbard specimen
Canada (TL)
 
  • British Columbia
    • Omineca Mining Division
      • Francois Lake
POITEVIN et al. (1924) +1 other reference
  • Yukon
    • Dawson mining district
Robinson et al. (1992)
Pacific Mineral Museum collection (now at the Pacific Museum of the Earth, UBC)
Robinson et al. (1992)
150-152. +2 other references
        • Kulan Camp (Area A; Area 1)
Robinson et al. (1992)
        • Stoneman Camp
Pavel M. Kartashov analytical data of ...
Robinson et al. (1992)
Czech Republic
 
  • Central Bohemian Region
    • Prague-West District
      • Nučice
www.researchgate.net (n.d.) +1 other reference
Germany
 
  • Hesse
    • Darmstadt
      • Darmstadt-Ost
U. Kolitsch and M. Fleck (2005)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
          • Lophos
            • Agrileza mines
Rieck et al. (2018)
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Amerzgane Cercle
        • Ouisselsate Caïdat
Favreau (2012)
  • Marrakesh-Safi Region
    • Rehamna Province
      • Sidi Bou Othmane Cercle
        • Jebilet Mtn (Djebilet Mtn)
          • Sidi Bou Othmane
Favreau (2012)
Namibia
 
  • Erongo Region
    • Karibib Constituency
      • Okatjimukuju Farm 55 (Friedrichsfelde Farm)
P. Keller and O. von Knorring
New Zealand
 
  • Tasman Region
    • Glenhope
Stott (pers. notes)
Norway
 
  • Buskerud
    • Modum
      • Overntjern
Chopin et al. (2001)
Romania
 
  • Hunedoara County
    • Boșorod
Onac +5 other references
Russia
 
  • Murmansk Oblast
    • Kovdorsky District
Subbotin et al. (1998) +2 other references
World of Stones 95: 5-6 +3 other references
Serbia
 
  • Central Serbia
    • Raška District
      • Raška
        • Jarandol Basin
          • Baljevac na Ibru
Stopanovic (1978)
South Africa
 
  • North West
    • Dr Kenneth Kaunda District Municipality
      • JB Marks Local Municipality
        • Ventersdorp
Cairncross et al. (1995)
Spain
 
  • Balearic Islands
B. Onac et al (2009)
      • Llucmajor
Onac et al. (2005)
  • Castile and Leon
    • Salamanca
Roda et al. (2001)
      • Garcirrey
Encarnación Roda-Robles (2007)
  • Catalonia
    • Barcelona
      • Baix Llobregat
Camprubí et al. (Catalunya)
          • Bruguers
Joan Rosell (2019)
USA
 
  • Maine
    • Oxford County
      • Newry
Peter Cristofono collection +1 other reference
  • Nevada
    • Humboldt County
      • Osgood Mountains
        • Potosi Mining District
Rocks & Minerals
    • Mineral County
      • Candelaria Mining District
Kampf et al. (2016)
  • New Hampshire
    • Grafton County
      • Groton
NIZAMOFF et al. (2004)
Geological Society of America Abstracts ... +1 other reference
  • North Carolina
    • Cleveland County
      • Kings Mountain
Hanahan (1985)
    • Gaston County
Smithsonian Institution Mineral ...
  • South Dakota
    • Custer County
      • Custer Mining District
        • Fourmile
Campbell et al. (1985)
        • Pringle
          • Cicero Peak
Smith et al. (2000)
  • Utah
    • Utah County
      • Sunshine Mining District
        • Fairfield
Liferovich et al. (1998)
 
Mineral and/or Locality  
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