Brianite
A valid IMA mineral species
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Formula:
Na2CaMg(PO4)2
Colour:
Colorless
Hardness:
4 - 5
Specific Gravity:
3.00 - 3.10
Crystal System:
Monoclinic
Name:
After Dr. Brian Mason (18 April 1917 – 3 December 2009), a New Zealandic-American geochemist, mineralogist and meteoriticist. He graduated from Canterbury University, New Zealand. He served as a Curator of Mineralogy at the American Museum of Natural History in New York, and as Curator of Meteorites at the Smithsonian Institution, Washington, D.C. He was a proponent for the systematic collection of meteorites and studied moon rocks. He was a recipient of the Leonard Medal and the Roebling Medal. The mineral stenhuggarite is also named for him.
Type Locality:
Isostructural with:
This page provides mineralogical data about Brianite.
Unique Identifiers
Mindat ID:
771
Long-form identifier:
mindat:1:1:771:7
GUID
(UUID V4):
(UUID V4):
0ae05375-7537-4c00-84d6-d698ff6083ea
IMA Classification of Brianite
Classification of Brianite
8.AC.30
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
Dana 7th ed.:
38.1.7.1
38.1.7.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
19.4.9
19 : Phosphates
4 : Phosphates of Ca
19 : Phosphates
4 : Phosphates 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 |
---|---|---|
Bne | 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 Brianite
Transparency:
Transparent
Colour:
Colorless
Hardness:
4 - 5 on Mohs scale
Density:
3.00 - 3.10 g/cm3 (Measured) 3.13 g/cm3 (Calculated)
Optical Data of Brianite
Type:
Biaxial (-)
RI values:
nα = 1.598 nβ = 1.605 nγ = 1.608
2V:
Measured: 63° to 65°, Calculated: 66°
Birefringence:
0.010
Max Birefringence:
δ = 0.010
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 weak
Optical Extinction:
extinction ^ lamellae = 2-3°
Pleochroism:
Non-pleochroic
Chemistry of Brianite
Mindat Formula:
Na2CaMg(PO4)2
Crystallography of Brianite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 13.36 Å, b = 5.23 Å, c = 9.13 Å
β = 91.2°
β = 91.2°
Ratio:
a:b:c = 2.554 : 1 : 1.746
Unit Cell V:
637.80 ų (Calculated from Unit Cell)
Comment:
Am Min (1975) 60:717; ICDD 29-1192
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0011078 | Brianite | Alkemper J, Fuess H (1998) The crystal structures of NaMgPO4, Na2CaMg(PO4)2 and Na18Ca13Mg5(PO4)18: new examples for glaserite related structures Zeitschrift fur Kristallographie 213 282-287 | 1998 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.73 Å | (90) |
3.34 Å | (70) |
3.16 Å | (60) |
2.72 Å | (80) |
2.68 Å | (90) |
2.63 Å | (10) |
2.23 Å | (70) |
1.875 Å | (90) |
Comments:
ICDD 29-1192, also 20-1091.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
5 : Primary asteroid phases | 4.566–4.560 |
6 : Secondary asteroid phases | 4.566-4.560 |
Type Occurrence of Brianite
General Appearance of Type Material:
Granular with lamellar structure.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 1506.
Geological Setting of Type Material:
Meteorite
Associated Minerals at Type Locality:
Synonyms of Brianite
Other Language Names for Brianite
Related Minerals - Strunz-mindat Grouping
8.AC. | Angarfite | NaFe3+5(PO4)4(OH)4 · 4H2O |
8.AC. | Wopmayite | Ca6Na3◻Mn(PO4)3(PO3OH)4 |
8.AC.X | Dyrnaesite-(La) | Na8Ce4+(La,REE)2(PO4)6 |
8.AC. | Edtollite | K2NaCu5Fe3+O2(AsO4)4 |
8.AC. | Alumoedtollite | K2NaCu5AlO2(AsO4)4 |
8.AC. | Crocobelonite | CaFe3+2O(PO4)2 |
8.AC. | Manganobadalovite | NaNaMn(MgFe3+)(AsO4)3 |
8.AC. | Beershevaite | CaFe3+3(PO4)3O |
8.AC. | Calciohatertite | NaNaCa(CaFe3+)(AsO4)3 |
8.AC. | Kabalovite | Fe2+3Fe3+4(PO4)6 |
8.AC. | Nazarchukite | Ca2NiFe3+2(PO4)4 |
8.AC. | Changesite–(Y) | (Ca8Y)◻Fe2+(PO4)7 |
8.AC. | Crocobelonite-1M | CaFe3+2O(PO4)2 |
8.AC. | Ebnerite | (NH4)Zn(PO4) |
8.AC. | Magnesioqingheiite | Na2Mg(MgAl)(PO4)3 |
8.AC. | Epiebnerite | (NH4)Zn(PO4) |
8.AC.02 | Grigorievite | Cu3Fe3+2Al2(VO4)6 |
8.AC.02 | Koksharovite | CaMg2Fe3+4(VO4)6 |
8.AC.02 | Ziminaite | Fe3+ 6 (VO4)6 |
8.AC.05 | Calciojohillerite | NaCaMg3(AsO4)3 |
8.AC.05 | Howardevansite | NaCuFe2(VO4)3 |
8.AC.05 | O'Danielite | Na(Zn,Mg)3(AsO4)(AsO3OH)2 |
8.AC.05 va | Alluaudite-Na□ | ◻4Na4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Alluaudite-Ca□ | ◻4Ca4Mn2+4Fe3+8(PO4)12 |
8.AC.05 va | Ferroalluaudite-NaNa | Na4Na4Fe2+4Fe3+8(PO4)12 |
8.AC.05 | Hagendorfite-NaNa | NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?) |
8.AC.05 | Erikapohlite | Cu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O |
8.AC.05 | Hatertite | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 |
8.AC.05 | Unnamed (Na-Mg Arsenate Hydroxyarsenate) | NaMg3(AsO4)(AsO3OH)2 |
8.AC.05 | Unnamed (Na-Zn-H Arsenate Hydrxyarsenate) | Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2 |
8.AC.05 | Zincobradaczekite | NaZn2Cu2(AsO4)3 |
8.AC.05 | Badalovite | Na2Mg2Fe(AsO4)3 |
8.AC.05 | Magnesiocanutite | NaMnMg2[AsO4]2[AsO2(OH)2] |
8.AC.05 | Magnesiohatertite | (Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3 |
8.AC.05 | Khrenovite | Na3Fe3+2(AsO4)3 |
8.AC.05 | Paraberzeliite | NaCa2Mg2(AsO4)3 |
8.AC.05 | Camanchacaite | NaCaMg2[AsO4][AsO3(OH)]2 |
8.AC.05 | Manganohatertite | NaNaCa(MnFe3+)(AsO4)3 |
8.AC.07 | Zhanghuifenite | Na3Mn4Mg2Al(PO4)6 |
8.AC.07 | Ferrobobfergusonite | Na2Fe2+5Fe3+Al(PO4)6 |
8.AC.10 | Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
8.AC.10 | Arseniopleite | NaCaMnMn2(AsO4)3 |
8.AC.10 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 |
8.AC.10 | Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 |
8.AC.10 | Hagendorfite | NaCaMn2+Fe2+2(PO4)3 |
8.AC.10 | Johillerite | Na(Mg,Zn)3Cu(AsO4)3 |
8.AC.10 | Maghagendorfite | (Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3 |
8.AC.10 | Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 |
8.AC.10 | Varulite | NaCaMn2+Mn2+2(PO4)3 |
8.AC.10 | Ferrohagendorfite | NaCaFe2+Fe2+2(PO4)3 |
8.AC.10 | Bradaczekite | NaCu4(AsO4)3 |
8.AC.10 | Groatite | NaCaMn2(PO4)[PO3(OH)]2 |
8.AC.15 | Bobfergusonite | Na2Mn5FeAl(PO4)6 |
8.AC.15 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 |
8.AC.15 | Qingheiite | NaNaMn2+(MgAl)(PO4)3 |
8.AC.15 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 |
8.AC.15 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 |
8.AC.15 | Ferrorosemaryite | ◻NaFe2+Fe3+Al(PO4)3 |
8.AC.15 | Ferroqingheiite | NaNaFe2+(MgAl)(PO4)3 |
8.AC.17 | Czochralskiite | Na4Ca3Mg(PO4)4 |
8.AC.18 | Manitobaite | Na16Mn2+ 25Al8(PO4)30 |
8.AC.20 | Marićite | NaFe2+(PO4) |
8.AC.25 | Berzeliite | (NaCa2)Mg2(AsO4)3 |
8.AC.25 | Manganberzeliite | (NaCa2)Mn2+2(AsO4)3 |
8.AC.25 | Palenzonaite | (NaCa2)Mn2+2(VO4)3 |
8.AC.25 | Schäferite | (NaCa2)Mg2(VO4)3 |
8.AC.25 | Hedegaardite | (Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH) |
8.AC.25 | Matyhite | Ca18(Ca,◻)2Fe2+2(PO4)14 |
8.AC.35 | Vitusite-(Ce) | Na3(Ce,La,Nd)(PO4)2 |
8.AC.40 | Olgite | (Sr,Ba)(Na,Sr,REE)2Na(PO4)2 |
8.AC.40 | Bario-olgite | (Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · |
8.AC.45 | Strontiowhitlockite | Sr9Mg(PO4)6(PO3OH) |
8.AC.45 | Whitlockite | Ca9Mg(PO4)6(PO3OH) |
8.AC.45 | Merrillite | Ca9NaMg(PO4)7 |
8.AC.45 | Tuite | Ca3(PO4)2 |
8.AC.45 | Ferromerrillite | Ca9NaFe2+(PO4)7 |
8.AC.47 | Iwateite | Na2BaMn(PO4)2 |
8.AC.47 | Yurmarinite | Na7(Fe3+,Mg,Cu)4(AsO4)6 |
8.AC.47 | Ozerovaite | Na2KAl3(AsO4)4 |
8.AC.47 | Anatolyite | Na6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6 |
8.AC.47 | Pansnerite | K3Na3(Fe3+,Al)6(AsO4)8 |
8.AC.50 | Chladniite | Na3CaMg11(PO4)9 |
8.AC.50 | Fillowite | Na3CaMn2+11(PO4)9 |
8.AC.50 | Johnsomervilleite | Na3CaFe11(PO4)9 |
8.AC.50 | Galileiite | Na3Fe2+Fe2+11(PO4)9 |
8.AC.50 | Xenophyllite | Na4Fe2+7(PO4)6 |
8.AC.50 | Udinaite | NaMg4(VO4)3 |
8.AC.50 | Arsenudinaite | NaMg4(AsO4)3 |
8.AC.52 | Lasnierite | (Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3 |
8.AC.55 | Pharmazincite | KZnAsO4 |
8.AC.57 | Zubkovaite | Ca3Cu3(AsO4)4 |
8.AC.60 | Kosnarite | KZr2(PO4)3 |
8.AC.65 | Panethite | (Na,Ca)2(Mg,Fe2+)2(PO4)2 |
8.AC.70 | Stanfieldite | Ca4Mg5(PO4)6 |
8.AC.75 | Ronneburgite | K2MnV4O12 |
8.AC.80 | Tillmannsite | Ag3Hg[(V,As)O4] |
8.AC.85 | Filatovite | K(Al,Zn)2(As,Si)2O8 |
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 Brianite
mindat.org URL:
https://www.mindat.org/min-771.html
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References for Brianite
Reference List:
Localities for Brianite
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.
Poland | |
| Karwowski et al. (2008) |
Russia | |
| Litasov et al. (2017) +1 other reference |
USA (TL) | |
| Am Min 60:717-718 +1 other reference |
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