Vuagnatite
A valid IMA mineral species
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About Vuagnatite
Formula:
CaAl(SiO4)(OH)
Colour:
Colourless, light blue, tan
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
3.42
Crystal System:
Orthorhombic
Member of:
Name:
Named in honor of Prof Dr. Marc Bernard Vuagnat (30 January 1922 - 23 March 2015), professor of geology, University of Geneva, Switzerland, "in recognition of his work spanning some twenty-five years in the field of ophiolites".
This page provides mineralogical data about Vuagnatite.
Unique Identifiers
Mindat ID:
4212
Long-form identifier:
mindat:1:1:4212:9
GUID
(UUID V4):
(UUID V4):
89d4640c-7468-42e4-8f8d-04d3eb87866b
IMA Classification of Vuagnatite
Approved
IMA Formula:
CaAlSiO4(OH)
Approval year:
1975
First published:
1976
Classification of Vuagnatite
9.AG.60
9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
52.4.2.2
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
16.9.7
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
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 |
---|---|---|
Vgn | 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 Vuagnatite
Vitreous
Transparency:
Translucent
Colour:
Colourless, light blue, tan
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Fracture:
Conchoidal
Density:
3.42(2) g/cm3 (Measured) 3.41 g/cm3 (Calculated)
Optical Data of Vuagnatite
Type:
Biaxial (-)
RI values:
nα = 1.701(2) nβ = 1.724(2) nγ = 1.727(2)
2V:
Measured: 44° (1), Calculated: 46°
Max Birefringence:
δ = 0.026
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:
High
Dispersion:
Strong to very strong, r < v.
Optical Extinction:
X = c; Y = b; Z = a.
Pleochroism:
Visible
Comments:
X = colorless or yellowish brown; Y = Z = colorless.
Comments:
Absorption: X >> Y = Z.
Chemistry of Vuagnatite
Mindat Formula:
CaAl(SiO4)(OH)
Common Impurities:
H2O
Crystallography of Vuagnatite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 7.0538(4) Å, b = 8.5410(4) Å, c = 5.6839(3) Å
Ratio:
a:b:c = 0.826 : 1 : 0.665
Unit Cell V:
342.44 ų (Calculated from Unit Cell)
Z:
4
Crystallographic forms of Vuagnatite
Crystal Atlas:
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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) |
---|---|---|---|---|---|---|---|
0000525 | Vuagnatite | McNear E, Vincent M G, Parthe E (1976) The crystal structure of vuagnatite, CaAl(OH)SiO4 American Mineralogist 61 831-838 | 1976 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
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Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.518 Å | (100) |
2.997 Å | (95) |
2.640 Å | (85) |
2.215 Å | (85) |
2.453 Å | (70) |
2.142 Å | (65) |
2.395 Å | (60) |
Comments:
Red Mountain, California, USA. Data from Pabst et al. (1977).
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
13 : Hadean serpentinization |
Type Occurrence of Vuagnatite
General Appearance of Type Material:
Anhedral and intimately intergrown with other calcium silicates and chlorite. As a replacement of plagioclase. Crystals from 0.03 to 0.5 mm in diameter. Frequently included by clinochlore, vesuvianite and hydrogrossular.
Place of Conservation of Type Material:
Natural History Museum, Geneva, 435/1; University of Geneva, Geneva, Switzerland; National Museum of Natural History, Washington, D.C., USA, 146560.
Geological Setting of Type Material:
In rodingitized pegmatitic anorthositic gabbro dykes, cross-cutting harzburgite-serpentinite from an ophiolitic zone.
Associated Minerals at Type Locality:
Reference:
Sarp, H., Bertrand, J., McNear, E. (1976) Vuagnatite, CaAl(OH)SiO4, a new natural calcium aluminum neosilicate. American Mineralogist: 61: 825-830.
Synonyms of Vuagnatite
Other Language Names for Vuagnatite
Relationship of Vuagnatite to other Species
Member of:
Other Members of this group:
Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Duftite-alpha | PbCu(AsO4)(OH) | |
Gottlobite | CaMg(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Unnamed (Pb-analogue of Nickelaustinite) | PbNi(AsO4)(OH) |
Structurally related to group(s):
Tilasite Group | A group of monoclinic arsenates. |
Common Associates
Associated Minerals Based on Photo Data:
8 photos of Vuagnatite associated with Mcguinnessite | (Mg,Cu)2(CO3)(OH)2 |
2 photos of Vuagnatite associated with Piemontite-(Sr) | (CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH) |
Related Minerals - Strunz-mindat Grouping
9.AG. | Ivanyukite-Na-T | Na2Ti4(SiO4)3(OH)O3 · 7H2O |
9.AG. | Ivanyukite-Na-C | Na2Ti4(SiO4)3(OH)2O2 · 6H2O |
9.AG. | Edgrewite | Ca9(SiO4)4F2 |
9.AG. | Aluminotaipingite-(CeCa) | (Ce6Ca3)◻Al(SiO4)3[SiO3(OH)]4F3 |
9.AG.02 | Gatedalite | ZrMn2+2Mn3+4SiO12 |
9.AG.2 | Skogbyite | Zr(Mg2Mn3+4)SiO12 |
9.AG.05 | Abswurmbachite | CuMn3+6(SiO4)O8 |
9.AG.05 | Braunite | Mn2+Mn3+6(SiO4)O8 |
9.AG.05 | Neltnerite | CaMn3+6(SiO4)O8 |
9.AG.05 | Braunite-II | CaMn3+14(SiO4)O20 |
9.AG.10 | Långbanite | Mn2+4Mn3+9Sb5+O16(SiO4)2 |
9.AG.12 | Taipingite-(CeCa) | (Ce7Ca2)◻Mg(SiO4)3[SiO3(OH)]4F3 |
9.AG.15 | Malayaite | CaSn(SiO4)O |
9.AG.15 | Titanite | CaTi(SiO4)O |
9.AG.15 | Vanadomalayaite | CaV4+(SiO4)O |
9.AG.15 | Natrotitanite | (Na0.5Y0.5)Ti(SiO4)O |
9.AG.15 | Żabińskiite | Ca[Al0.5(Ta,Nb)0.5)](SiO4)O |
9.AG.20 | Cerite-(CeCa) | (Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3 |
9.AG.20 | Ferricerite-(LaCa) | (La6Ca3)◻Fe3+(SiO4)3(SiO3OH)4(OH)3 |
9.AG.20 | Aluminocerite-(CeCa) | (Ce6Ca3)◻Al(SiO4)3[SiO3(OH)]4(OH)3 |
9.AG.20 | Nipeiite-(Ce) | Ce9Fe3+(SiO4)6[SiO3(OH)](OH)3 |
9.AG.25 | Trimounsite-(Y) | Y2Ti2(SiO4)O5 |
9.AG.25 | Yftisite-(Y) | (Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6 |
9.AG.25 | Mieite-(Y) | Y4Ti(SiO4)2O[F,(OH)]6 |
9.AG.30 | Sitinakite | KNa2Ti4(SiO4)2O5(OH) · 4H2O |
9.AG.35 | Kittatinnyite | Ca2Mn2Mn(SiO4)2(OH)4 · 9H2O |
9.AG.40a | Natisite | Na2Ti(SiO4)O |
9.AG.40b | Paranatisite | Na2Ti(SiO4)O |
9.AG.45 | Törnebohmite-(Ce) | Ce2Al(SiO4)2(OH) |
9.AG.45 | Törnebohmite-(La) | La2Al(SiO4)2(OH) |
9.AG.50 | Kuliokite-(Y) | Y4Al(SiO4)2(OH)2F5 |
9.AG.50 | Ivanyukite-Na | Na2Ti4(SiO4)3(OH)2O2 · 6H2O |
9.AG.50 | Ivanyukite-K | K2Ti4(SiO4)3(OH)2O2 · 9H2O |
9.AG.50 | Ivanyukite-Cu | CuTi4(SiO4)3(OH)2O2 · 7H2O |
9.AG.50 | Hydroxyledgrewite | Ca9(SiO4)4(OH)2 |
9.AG.52 | Ulfanderssonite-(Ce) | (Ce15Ca)Σ16Mg2(SiO4)10(SiO3OH)(OH,F)5Cl3 |
9.AG.55 | Chantalite | CaAl2(SiO4)(OH)4 |
9.AG.60 | Mozartite | CaMn3+(SiO4)(OH) |
9.AG.65 | Hatrurite | Ca3(SiO4)O |
9.AG.70 | Jasmundite | Ca11(SiO4)4O2S |
9.AG.75 | Afwillite | Ca3(HSiO4)2 · 2H2O |
9.AG.80 | Bultfonteinite | Ca2(HSiO4)F · H2O |
9.AG.85 | Zoltaiite | BaV4+2V3+12(SiO4)2O19 |
9.AG.90 | Tranquillityite | (Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12 |
Other Information
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 Vuagnatite
mindat.org URL:
https://www.mindat.org/min-4212.html
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References for Vuagnatite
Reference List:
Localities for Vuagnatite
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.
Czech Republic | |
| Tasáryová et al. (2014) |
Greece | |
| Hatzipanagiotou et al. (2003) |
Hatzipanagiotou et al. (2003) | |
Pelletier et al. (2008) | |
Japan | |
| Yamada (2004) |
| Mineralogical Journal Vol. 13 (1986) |
| rruff.geo.arizona.edu (n.d.) |
Yamada (2004) | |
Kazakhstan | |
| Pilitsyna et al. (2018) |
New Zealand | |
| Craw et al. (Note) +1 other reference |
| rruff.geo.arizona.edu (n.d.) +1 other reference |
Poland | |
| Szuszkiewicz et al. (2013) |
South Africa | |
| Cairncross et al. (1995) |
Turkey (TL) | |
| American Mineralogist |
American Mineralogist: 63: 1282 | |
USA | |
| Pabst (1977) |
| a New Occurrence. Mineralogical Magazine +2 other references |
Pabst (1977) | |
| Van Nostrand Reinholt Press: 479. +2 other references |
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Copper King Mine, Red Mountain, Red Mountain Mining District, Mendocino County, California, USA