IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Brianite

This page is currently not sponsored. Click here to sponsor this page.
Brian Harold Mason
Formula:
Na2CaMg(PO4)2
Colour:
Colorless
Hardness:
4 - 5
Specific Gravity:
3.00 - 3.10
Crystal System:
Monoclinic
Name:
After Dr. Brian Mason (1917-2009), 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.
Isostructural with:
This page provides mineralogical data about Brianite.


Hide all sections | Show all sections

Classification of BrianiteHide

Approved
Approval Year:
1966
8.AC.30

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
19.4.9

19 : Phosphates
4 : Phosphates of Ca

Physical Properties of BrianiteHide

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 BrianiteHide

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.
Surface Relief:
Moderate
Dispersion:
r < v weak
Optical Extinction:
extinction ^ lamellae = 2-3°
Pleochroism:
Non-pleochroic

Chemical Properties of BrianiteHide

Formula:
Na2CaMg(PO4)2

Crystallography of BrianiteHide

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°
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

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.73 (90)
3.34 (70)
3.16 (60)
2.72 (80)
2.68 (90)
2.63 (10)
2.23 (70)
1.875 (90)
Comments:
ICDD 29-1192, also 20-1091.

Type Occurrence of BrianiteHide

General Appearance of Type Material:
Granular with lamellar structure.
Geological Setting of Type Material:
Meteorite
Associated Minerals at Type Locality:

Synonyms of BrianiteHide

Other Language Names for BrianiteHide

German:Brianit
Simplified Chinese:磷镁钙钠石
Spanish:Brianita

Related Minerals - Nickel-Strunz GroupingHide

8.AC.WopmayiteCa6Na3□Mn(PO4)3(PO3OH)4 Trig. 3m : R3c
8.AC.05HowardevansiteNaCuFe2(VO4)3Tric. 1 : P1
8.AC.10Alluaudite(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3Mon.
8.AC.10Arseniopleite(Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3Mon. 2/m : P2/b
8.AC.10Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
8.AC.10Ferroalluaudite(Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3
8.AC.10HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
8.AC.10JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
8.AC.10Maghagendorfite(□,Na,)(Na,Ca,Fe2+)Mn(Mg,Fe2+,Fe3+)3(PO4)3Mon.
8.AC.10NickenichiteNa0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3Mon. 2/m : B2/b
8.AC.10VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
8.AC.10FerrohagendorfiteNaCaFe2+Fe2+2(PO4)3Mon.
8.AC.10BradaczekiteNaCu4(AsO4)3Mon. 2/m : B2/b
8.AC.10YazganiteNaFe3+2(Mg,Mn2+)(AsO4)3 · H2OMon. 2/m : B2/b
8.AC.10GroatiteNaCaMn2(PO4)(HPO4)2Mon. 2/m : B2/b
8.AC.15BobfergusoniteNa2Mn5FeAl(PO4)6Mon. 2/m : P2/b
8.AC.15Ferrowyllieite(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3Mon. 2/m : P21/b
8.AC.15QingheiiteNaMn3+Mg(Al,Fe3+)(PO4)3Mon. 2/m : P21/b
8.AC.15Rosemaryite(Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3Mon. 2/m : P21/b
8.AC.15Wyllieite(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3Mon. 2/m
8.AC.15Ferrorosemaryite◻NaFe2+Fe3+Al(PO4)3Mon.
8.AC.15Qingheiite-(Fe2+)Na2Fe2+MgAl(PO4)3Mon. 2/m : P21/m
8.AC.18ManitobaiteNa16Mn2+ 25Al8(PO4)30Mon. m : Pb
8.AC.20MarićiteNaFe2+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna
8.AC.25Berzeliite(NaCa2)Mg2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25ManganberzeliiteNaCa2Mn2+2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25Palenzonaite(Ca,Na)3CaMn2+2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
8.AC.25SchäferiteCa2NaMg2(VO4)3Iso.
8.AC.35Vitusite-(Ce)Na3(Ce,La,Nd)(PO4)2Orth. mm2 : Pca21
8.AC.40Olgite(Sr,Ba)(Na,Sr,REE)2Na(PO4)2Trig. 3m (3 2/m) : P3m1
8.AC.40Bario-olgite(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · Trig. 3 : P3
8.AC.45StrontiowhitlockiteSr9Mg(PO4)6(HPO4)Trig. 3m : R3c
8.AC.45WhitlockiteCa9Mg(PO4)6(HPO4)Trig. 3m : R3c
8.AC.45MerrilliteCa9NaMg(PO4)7Trig. 3m : R3m
8.AC.45TuiteCa3(PO4)2Trig. 3m (3 2/m) : R3m
8.AC.45FerromerrilliteCa9NaFe2+(PO4)7Trig. 3m : R3c
8.AC.50Chladniite{Ca}{Na8}{Ca4Na4}{(Mg,Fe2+)43}(PO4)36Trig. 3 : R3
8.AC.50Fillowite{Mn2+}{Na8}{Ca4Na4}{(Mn2+,Fe2+)43}(PO4)36Trig. 3 : R3
8.AC.50JohnsomervilleiteNa10Ca6Mg18Fe25(PO4)36Trig.
8.AC.50Galileiite{Fe2+}{Na8}{Fe2+4Na4}{Fe2+43}(PO4)36Trig. 3 : R3
8.AC.50Stornesite-(Y){(Y, Ca)}{Na62}{(Ca,Na)8}{(Mg,Fe2+)43}(PO4)36Trig. 3 : R3
8.AC.50XenophylliteNa4Fe2+7(PO4)6Tric. 1 : P1
8.AC.55HarrisoniteCa(Fe2+,Mg)6(PO4)2(SiO4)2Trig.
8.AC.60KosnariteKZr2(PO4)3Trig. 3m (3 2/m) : R3c
8.AC.65Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
8.AC.70StanfielditeCa4Mg5(PO4)6Mon.
8.AC.75RonneburgiteK2MnV4O12Mon. 2/m
8.AC.80Tillmannsite(Ag3Hg)(VO4,AsO4)Tet. 4 : I4
8.AC.85FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.4.1MonetiteCa(HPO4)Tric. 1
19.4.2HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
19.4.3BrushiteCa(HPO4) · 2H2OMon. m : Bb
19.4.4IsoclasiteCa2(PO4)(OH) · 2H2OMon.
19.4.5BuchwalditeNaCa(PO4)Orth. mm2 : Pmn21
19.4.6CanaphiteNa2Ca(P2O7) · 4H2OMon.
19.4.7Mundrabillaite(NH4)2Ca(HPO4)2 · H2OMon. m : Pm
19.4.8WhitlockiteCa9Mg(PO4)6(HPO4)Trig. 3m : R3c
19.4.10Petersite-(Y)(Y,Ce,Nd)Cu6(PO4)3(OH)6 · 3H2OHex.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for BrianiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist: 53: 508.
American Mineralogist: 60: 717-718.
Fuchs, L. H., Olsen, E. and Henderson, E. P. (1967): Occurrence of brianite and panethite, two new phosphate minerals from the Dayton meteorite. Geochim. Cosmochim. Acta: 31, 1711-1719.

Internet Links for BrianiteHide

Localities for BrianiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Poland
 
  • Wielkopolskie
    • Poznań
MULTIMINERAL INCLUSIONS IN THE MORASKO COARSE OCTAHEDRITE www.lpi.usra.edu/meetings/metsoc2008/pdf/5232.pdf
USA (TL)
 
  • Ohio
    • Montgomery Co.
Am Min 60:717-718; McCoy, T. J., Steele, I. M., Keil K., Leonard, B. F. & Endreß, M. (1994) Chladniite, Na2CaMg7(PO4)6: A new mineral from the Carlton (IIICD) iron meteorite. Am Min 79 (3/4): 375-380. (March/April 1994)
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 19, 2018 22:13:36 Page generated: September 14, 2018 01:45:00
Go to top of page