Collinsite
A valid IMA mineral species - grandfathered
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About Collinsite
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
Member of:
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 Identifiers
Mindat ID:
1109
Long-form identifier:
mindat:1:1:1109:5
GUID
(UUID V4):
(UUID V4):
f95c33ad-b116-4063-8e44-df5981441753
IMA Classification of Collinsite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1924
Classification of Collinsite
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
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
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
19.14.20
19 : Phosphates
14 : Phosphates of Fe and other metals
19 : Phosphates
14 : Phosphates of Fe and other metals
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Coll | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Collinsite
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.
On {001} and {010}, fair.
Density:
2.99 g/cm3 (Measured) 3.04 g/cm3 (Calculated)
Optical Data of Collinsite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v strong
Chemistry of Collinsite
Mindat Formula:
Ca2Mg(PO4)2 · 2H2O
Crystallography of Collinsite
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°
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 Structure
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2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0006118 | Collinsite | Herwig S, Hawthorne F C (2006) The topology of hydrogen bonding in brandtite, collinsite and fairfieldite The Canadian Mineralogist 44 1181-1196 | 2006 | Rapid Creek, Yukon Territory, Canada | 0 | 293 | |
0012055 | Collinsite | Brotherton P D, Maslen E N, Pryce M W, White A H (1974) Crystal structure of collinsite Australian Journal of Chemistry 27 653-656 | 1974 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Image Loading
Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
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 Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Collinsite
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 Collinsite
Relationship of Collinsite to other Species
Member of:
Other Members of this group:
Anorthoroselite | Ca2Co(AsO4)2 · 2H2O | Tric. |
Cassidyite | Ca2Ni(PO4)2 · 2H2O | Tric. |
Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O | Tric. 1 : P1 |
Gaitite | Ca2Zn(AsO4)2 · 2H2O | Tric. 1 : P1 |
Hillite | Ca2Zn(PO4)2 · 2H2O | Tric. 1 : P1 |
Messelite | Ca2Fe2+(PO4)2 · 2H2O | Tric. 1 : P1 |
Nickeltalmessite | Ca2Ni(AsO4)2 · 2H2O | Tric. 1 : P1 |
Parabrandtite | Ca2Mn2+(AsO4)2 · 2H2O | Tric. 1 : P1 |
Talmessite | Ca2Mg(AsO4)2 · 2H2O | Tric. 1 : P1 |
Unnamed (Fe2+-analogue of Parabrandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
14 photos of Collinsite associated with Scholzite | CaZn2(PO4)2 · 2H2O |
13 photos of Collinsite associated with Robertsite | Ca2Mn3+3(PO4)3O2 · 3H2O |
12 photos of Collinsite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
10 photos of Collinsite associated with Hillite | Ca2Zn(PO4)2 · 2H2O |
10 photos of Collinsite associated with Dolomite | CaMg(CO3)2 |
9 photos of Collinsite associated with Carbonate-rich Hydroxylapatite | Ca5(PO4,CO3)3(OH,O) |
9 photos of Collinsite associated with Childrenite | Fe2+Al(PO4)(OH)2 · H2O |
9 photos of Collinsite associated with Kovdorskite | Mg2(PO4)(OH) · 3H2O |
8 photos of Collinsite associated with Bobierrite | Mg3(PO4)2 · 8H2O |
7 photos of Collinsite associated with Rose Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
8.CG. | Ca-Huréaulite | CaMn5(PO4)4 · 4H2O |
8.CG. | Fluckite | CaMn2+(AsO3OH)2 · 2H2O |
8.CG. | Dondoellite | Ca2Fe(PO4)2 · 2H2O |
8.CG. | Alumolukrahnite | Ca[CuAl](AsO4)2(H2O,OH)2 |
8.CG.05 | Cassidyite | Ca2Ni(PO4)2 · 2H2O |
8.CG.05 | Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
8.CG.05 | Gaitite | Ca2Zn(AsO4)2 · 2H2O |
8.CG.05 | Messelite | Ca2Fe2+(PO4)2 · 2H2O |
8.CG.05 | Parabrandtite | Ca2Mn2+(AsO4)2 · 2H2O |
8.CG.05 | Anorthoroselite | Ca2Co(AsO4)2 · 2H2O |
8.CG.05 | Talmessite | Ca2Mg(AsO4)2 · 2H2O |
8.CG.05 | Hillite | Ca2Zn(PO4)2 · 2H2O |
8.CG.05 | Unnamed (Fe2+-analogue of Parabrandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
8.CG.10 | Brandtite | Ca2Mn2+(AsO4)2 · 2H2O |
8.CG.10 | Roselite | Ca2Co(AsO4)2 · 2H2O |
8.CG.10 | Wendwilsonite | Ca2Mg(AsO4)2 · 2H2O |
8.CG.10 | Zincroselite | Ca2Zn(AsO4)2 · 2H2O |
8.CG.10 | Rruffite | Ca2Cu(AsO4)2 · 2H2O |
8.CG.10 | Unnamed (Fe2+-analogue of Brandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
8.CG.15 | Ferrilotharmeyerite | CaZnFe3+(AsO4)2(OH) · H2O |
8.CG.15 | Lotharmeyerite | CaZn2(AsO4)2 · 2H2O |
8.CG.15 | Mawbyite | PbFe3+2(AsO4)2(OH)2 |
8.CG.15 | Mounanaite | PbFe3+2(VO4)2(OH,F)2 |
8.CG.15 | Thometzekite | PbCu2+2(AsO4)2 · 2H2O |
8.CG.15 | Tsumcorite | PbZn2(AsO4)2 · 2H2O |
8.CG.15 | Cobaltlotharmeyerite | CaCo2(AsO4)2 · 2H2O |
8.CG.15 | Cabalzarite | CaMg2(AsO4)2 · 2H2O |
8.CG.15 | Krettnichite | PbMn3+2(VO4)2(OH)2 |
8.CG.15 | Cobalttsumcorite | PbCo2(AsO4)2 · 2H2O |
8.CG.15 | Nickellotharmeyerite | CaNi2(AsO4)2 · 2H2O |
8.CG.15 | Manganlotharmeyerite | CaMn3+2(AsO4)2(OH)2 |
8.CG.15 | Schneebergite | BiCo2(AsO4)2(OH) · H2O |
8.CG.15 | Nickelschneebergite | BiNi2(AsO4)2(OH) · H2O |
8.CG.15 | Yancowinnaite | PbCuAl(AsO4)2OH · H2O |
8.CG.15 | Nickeltsumcorite | Pb(Ni,Fe3+)2(AsO4)2(H2O,OH)2 |
8.CG.15 | Magnesiofluckite | CaMg(AsO3OH)2(H2O)2 |
8.CG.20 | Gartrellite | PbCuFe3+(AsO4)2(OH) · H2O |
8.CG.20 | Helmutwinklerite | PbZn2(AsO4)2 · 2H2O |
8.CG.20 | Zincgartrellite | PbZn2(AsO4)2(H2O,OH)2 |
8.CG.20 | Rappoldite | PbCo2(AsO4)2 · 2H2O |
8.CG.20 | Phosphogartrellite | PbCuFe3+(PO4)2(OH,H2O)2 |
8.CG.20 | Lukrahnite | CaCuFe3+(AsO4)2(OH,H2O)2 |
8.CG.25 | Pottsite | (Pb3xBi4-2x)(VO4)4 · H2O (0.8 < x < 1.0) |
8.CG.25 | Armellinoite-(Ce) | Ca4Ce4+(AsO4)4 · H2O |
8.CG.35 | Nickeltalmessite | Ca2Ni(AsO4)2 · 2H2O |
8.CG.55 | Irhtemite | Ca4Mg(AsO4)2(HAsO4)2 · 4H2O |
Other Information
Thermal Behaviour:
Gives a strong reaction for water in a closed tube.
Fuses, with intumescence, at 3 to a brownish slag.
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 Collinsite
mindat.org URL:
https://www.mindat.org/min-1109.html
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References for Collinsite
Reference List:
Wolfe, C. W. (1940) Classification of minerals of the type A3(XO4)2·nH2O. American Mineralogist, 25 (11) 738-753 pp.746-747
Bridge, P. J., Pryce, M. W. (1974) Magnesian collinsite from Milgun Station, Western Australia. Mineralogical Magazine, 39 (305) 577-579 doi:10.1180/minmag.1974.039.305.11
Liferovich, R. P., Pakhomovsky, Y. A., Bogdanova, A. N., Balaganskaya, E. G., Laajoki, K. V.O., Gehor, S., Chukanov, N. V. (2001) Collinsite in hydrothermal assemblages related to carbonatites in the Kovdor complex, northwestern Russia. The Canadian Mineralogist, 39 (4) 1081-1094 doi:10.2113/gscanmin.39.4.1081
Localities for Collinsite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Australia | |
| Pring et al. (2000) |
| Johnston et al. (1978) |
| |
| Mineralogical Magazine 39 (1974) +1 other reference |
Austria | |
| Niedermayr et al. (1995) |
Bahamas | |
| Onac B.P. et al. (2001) +1 other reference |
Brazil | |
| Sergio Varvello collection |
| Neil Hubbard specimen |
Canada (TL) | |
| POITEVIN et al. (1924) +1 other reference |
| 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 | |
| Robinson et al. (1992) |
| Pavel M. Kartashov analytical data of ... |
Robinson et al. (1992) | |
Czech Republic | |
| www.researchgate.net (n.d.) +1 other reference |
Germany | |
| U. Kolitsch and M. Fleck (2005) |
Greece | |
| Rieck et al. (2018) |
Morocco | |
| Favreau (2012) |
| Favreau (2012) |
Namibia | |
| P. Keller and O. von Knorring |
New Zealand | |
| Stott (pers. notes) |
Norway | |
| Chopin et al. (2001) |
Romania | |
| Onac +5 other references |
Russia | |
| Subbotin et al. (1998) +2 other references |
World of Stones 95: 5-6 +3 other references | |
Serbia | |
| Stopanovic (1978) |
South Africa | |
| Cairncross et al. (1995) |
Spain | |
| B. Onac et al (2009) |
| Onac et al. (2005) |
| Roda et al. (2001) |
| Encarnación Roda-Robles (2007) |
| Camprubí et al. (Catalunya) |
| Joan Rosell (2019) |
USA | |
| Peter Cristofono collection +1 other reference |
| Rocks & Minerals |
| Kampf et al. (2016) |
| NIZAMOFF et al. (2004) |
Geological Society of America Abstracts ... +1 other reference | |
| Hanahan (1985) |
| Smithsonian Institution Mineral ... |
| Campbell et al. (1985) |
| Smith et al. (2000) |
| Liferovich et al. (1998) |
Quick NavTopAbout CollinsiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Francois Lake phosphate occurrence, Francois Lake, Omineca Mining Division, British Columbia, Canada