ALMOST THERE!. Help us with a final push needed to keep mindat.org running. Click here to help.
Catawiki are hosting a mindat.org benefit auction. All proceeds to mindat.org! BID NOW
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 EducatorsMindat Articles
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
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Buchwaldite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
NaCa(PO4)
Colour:
White
Hardness:
3
Specific Gravity:
3.21 (Calculated)
Crystal System:
Orthorhombic
Name:
For Dr. Vagn Fabritius Buchwald [June 23, 1929 Fredriksberg, Denmark - ] of Department of Metallurgy, Danmarks Tekniske Højskole, Lyngby, Denmark.
A synthetic arsenate analogue is known.


Hide all sections | Show all sections

Classification of BuchwalditeHide

Approved
8.AD.25

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 7th ed.:
38.1.2.2
38.1.2.2

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
19.4.5

19 : Phosphates
4 : Phosphates of Ca

Physical Properties of BuchwalditeHide

Transparency:
Translucent
Colour:
White
Streak:
White
Hardness:
Comment:
Fairy low, less than 3
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Fracture:
Splintery
Density:
3.21 g/cm3 (Calculated)

Optical Data of BuchwalditeHide

Type:
Biaxial (-)
RI values:
nα = 1.607 nβ = 1.610 nγ = 1.616
2V:
Measured: 65° , Calculated: 72°
Birefringence:
0.009
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v
Optical Extinction:
parallel

Chemical Properties of BuchwalditeHide

Formula:
NaCa(PO4)

Crystallography of BuchwalditeHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pmn21
Setting:
Pmn21
Cell Parameters:
a = 5.167(25) Å, b = 9.259(45) Å, c = 6.737(32) Å
Ratio:
a:b:c = 0.558 : 1 : 0.728
Unit Cell V:
322.31 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Fibers.
Comment:
Am Min(1977) 62:362.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.79 (90)
2.72 (100)
2.63 (60)
2.58 (50)
2.51 (40)
2.19 (40)
1.91 (80)
1.54 (30)
Comments:
ICDD 29-1194

Type Occurrence of BuchwalditeHide

General Appearance of Type Material:
Minute interlocking fibers.
Geological Setting of Type Material:
Cape York meteorite
Associated Minerals at Type Locality:

Synonyms of BuchwalditeHide

Other Language Names for BuchwalditeHide

German:Buchwaldit
Simplified Chinese:磷钠钙石
Spanish:Buchwaldita

Related Minerals - Nickel-Strunz GroupingHide

8.AD.05NahpoiteNa2HPO4Mon. 2/m : P21/m
8.AD.10MonetiteCa(HPO4)Tric. 1
8.AD.10WeiliteCa(HAsO4)Tric. 1 : P1
8.AD.10ŠvenekiteCa(H2AsO4)2Tric. 1 : P1
8.AD.15Archerite(K,NH4)(H2PO4)Tet. 4 2m : I4 2d
8.AD.15Biphosphammite(NH4,K)(H2PO4)Tet. 4 2 2 : I41 2 2
8.AD.20Phosphammite(NH4)2(HPO4)Mon. 2/m : P21/b
8.AD.30SchultenitePb(HAsO4)Mon. 2/m : P2/b
8.AD.35Chernovite-(Y)Y(AsO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35DreyeriteBi(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Ce)Ce(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Y)Y(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Xenotime-(Y)Y(PO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35PretuliteSc(PO4)Tet.
8.AD.35Xenotime-(Yb)Yb(PO4)Tet.
8.AD.35Wakefieldite-(La)La(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.40PucheriteBi(VO4)Orth. mmm (2/m 2/m 2/m)
8.AD.45XimengiteBi(PO4)Trig.
8.AD.50Gasparite-(Ce)Ce(AsO4)
8.AD.50Monazite-(Ce)Ce(PO4)Mon. 2/m : P21/b
8.AD.50Monazite-(La)La(PO4)
8.AD.50Monazite-(Nd)Nd(PO4)
8.AD.50RooseveltiteBi(AsO4)Mon. 2/m
8.AD.50CheraliteCaTh(PO4)2Mon. 2/m
8.AD.50Monazite-(Sm)Sm(PO4)Mon. 2/m : P21/m
8.AD.50UM2005-35-VO:CaFePSiTh(Th,Ca)(VO4,SiO4,PO4)
8.AD.55TetrarooseveltiteBi(AsO4)Tet.
8.AD.60Chursinite(Hg+2)0.5Hg2+(AsO4)Mon. 2/m : P21/b
8.AD.65ClinobisvaniteBi(VO4)Mon. 2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

38.1.2.1MarićiteNaFe2+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna

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.
19.4.6CanaphiteNa2Ca(P2O7) · 4H2OMon.
19.4.7Mundrabillaite(NH4)2Ca(HPO4)2 · H2OMon. m : Pm
19.4.8WhitlockiteCa9Mg(PO4)6(HPO4)Trig. 3m : R3c
19.4.9BrianiteNa2CaMg(PO4)2Mon. 2/m : P21/b
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 BuchwalditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Olsen, E., Erlichman, J., Bunch, T.E., Moore, P.B. (1977) Buchwaldite, a new meteoritic phosphate mineral. American Mineralogist: 62: 362-364.
Ben Amara, M., Vlasse, M., le Flem, G., Hagenmuller, P. (1983) Structure of the low-temperature variety of calcium sodium orthophosphate, NaCaPO4. Acta Crystallographica: C39: 1483-1485.

Internet Links for BuchwalditeHide

Localities for BuchwalditeHide

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.
Denmark (TL)
 
  • Greenland
    • Avannaata
      • Saviksoah Peninsula
Amer.Min.(1977) 62, 362-364; Handbook of Mineralogy
Poland
 
  • Greater Poland
    • Poznań
MULTIMINERAL INCLUSIONS IN THE MORASKO COARSE OCTAHEDRITE www.lpi.usra.edu/meetings/metsoc2008/pdf/5232.pdf
Uganda
 
  • Eastern Region
    • Teso District
Kracher, A., Gramstad, S. D. & Kurat, G. (1998) Soroti and the Origin of Sulfide-rich Meteorites: Meteoritics & Planetary Science (abstract) 33 (4, Supplement): pp. A88-A89 (July 1998)
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: December 10, 2018 02:11:53 Page generated: December 4, 2018 23:41:47
Go to top of page