Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Burangaite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Hålsjöberg (Horrsjöberg), Torsby, Värmland, Sweden
© Knut Eldjarn

Show Burangaite Photos (3)



Formula:
NaFe
2+
 
Al
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
Na may be replaced by minor Ca.
System:Monoclinic
Name:Named for the type locality at the Buranga pegmatite, Gatumba District, Western Province, Rwanda.


Burangaite-Matioliite Series. Fe2+ analogue of Matioliite.

Several "Mg-rich" burangaites reported in the literature may in fact be matioliite (Atencio et al., 2006).

Classification of Burangaite

IMA status:Approved 1976
Strunz 8th edition ID:7/D.11-120
Nickel-Strunz 10th (pending) edition ID:8.DK.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
K : With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
Dana 8th edition ID:42.9.1.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
Hey's CIM Ref.:19.14.9

19 : Phosphates
14 : Phosphates of Fe and other metals
mindat.org URL:http://www.mindat.org/min-802.html
Please feel free to link to this page.

Type Occurrence of Burangaite

Type Locality:Buranga pegmatite, Gatumba District, Western Province, Rwanda
Year of Discovery:1977

Crystallography of Burangaite

Crystal System:Monoclinic
Cell Parameters:a = 25.09Å, b = 5.04Å, c = 13.45Å
β = 110.91°
Ratio:a:b:c = 4.978 : 1 : 2.669
Unit Cell Volume:V 1,588.79 ų (Calculated from Unit Cell)

Optical Data of Burangaite

Type:Biaxial (-)
RI values: nα = 1.611 nβ = 1.635 nγ = 1.643
2V:Measured: 58° , Calculated: 58°
Maximum Birefringence:δ = 0.032

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively strong

Chemical Properties of Burangaite

Formula:
NaFe
2+
 
Al
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O


Na may be replaced by minor Ca.
Essential elements:Al, Fe, H, Na, O, P
All elements listed in formula:Al, Fe, H, Na, O, P

Relationship of Burangaite to other Species

Series:Forms a series with Matioliite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
8.DK.Richelsdorfite
Ca
 
2
Cu
 
5
Sb(AsO
 
4
)
 
4
(OH)
 
6
Cl · 6H
 
2
O
8.DK.10Bariopharmacosiderite
Ba
 
0.5
Fe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 5H
 
2
O
8.DK.10Pharmacosiderite
KFe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
8.DK.10Natropharmacosiderite
(Na,K)Fe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
8.DK.10Hydroniumpharmacosiderite
(H
 
3
O)Fe
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.12Pharmacoalumite
KAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6.5H
 
2
O
8.DK.12Natropharmacoalumite
NaAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.12Bariopharmacoalumite
BaAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.15Dufrénite
Ca
 
0.5
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Matioliite
NaMgAl
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Gayite
NaMn
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.20Kidwellite
NaFe
3+
9
(PO
 
4
)
 
6
(OH)
 
11
 · 3H
 
2
O
8.DK.25Bleasdaleite
(Ca,Fe
3+
 
)
 
2
Cu
 
5
(Bi,Cu)(PO
 
4
)
 
4
(H
 
2
O,OH,Cl)
 
13
8.DK.30Matulaite
(Fe
3+
 
,Al)Al
 
7
(PO
 
4
)
 
4
(PO
 
3
OH)
 
2
(OH)
 
8
(H
 
2
O)
 
8
 · 8H
 
2
O
8.DK.35Krasnovite
Ba(Al,Mg)(PO
 
4
,CO
 
3
)(OH)
 
2
 · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.14.1Cyrilovite
NaFe
3+
3
(PO
 
4
)
 
2
(OH)
 
2
 · 2H
 
2
O
19.14.2Kidwellite
NaFe
3+
9
(PO
 
4
)
 
6
(OH)
 
11
 · 3H
 
2
O
19.14.3Rosemaryite
(Na,Ca,Mn)(Mn,Fe
2+
 
)(Fe
3+
 
,Mg)Al(PO
 
4
)
 
3
19.14.4Wyllieite
(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO
 
4
)
 
3
19.14.5Ferrowyllieite
(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO
 
4
)
 
3
19.14.6Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.7Leucophosphite
KFe
3+
2
(PO
 
4
)
 
2
(OH) · 2H
 
2
O
19.14.8Spheniscidite
(NH
 
4
,K)(Fe
3+
 
,Al)
 
2
(PO
 
4
)
 
2
(OH) · 2H
 
2
O
19.14.10Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
(PO
 
4
)(OH,O)
19.14.11Ushkovite
MgFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.12Garyansellite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
(OH,O) · 1.5H
 
2
O
19.14.13Thadeuite
Ca(Mg,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
(OH,F)
 
2
19.14.14Anapaite
Ca
 
2
Fe
2+
 
(PO
 
4
)
 
2
 · 4H
 
2
O
19.14.15Xanthoxenite
Ca
 
4
Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
2
 · 3H
 
2
O
19.14.16Calcioferrite
Ca
 
2
Fe
3+
2
(PO
 
4
)
 
3
(OH) · 7H
 
2
O
19.14.17Mitridatite
Ca
 
2
Fe
3+
3
(PO
 
4
)
 
3
O
 
2
 · 3H
 
2
O
19.14.18Mélonjosephite
CaFe
2+
 
Fe
3+
 
(PO
 
4
)
 
2
(OH)
19.14.19Delvauxite
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
 · 4-6H
 
2
O not confirmed ·
19.14.20Collinsite
Ca
 
2
(Mg,Fe
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
19.14.21Segelerite
Ca
 
2
 Mg
 
2
 Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.14.22Kingsmountite
Ca
 
4
(Fe
2+
 
,Mn
2+
 
)Al
 
4
(PO
 
4
)
 
6
(OH)
 
4
 · 12H
 
2
O
19.14.23Vauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 6H
 
2
O
19.14.24Metavauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.25Paravauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.26Sigloite
Fe
3+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
3
 · 7H
 
2
O
19.14.27Cacoxenite
Fe
3+
24
Al(PO
 
4
)
 
17
O
 
6
(OH)
 
12
 · 17H
 
2
O
19.14.28Koninckite
Fe
3+
 
PO
 
4
 · 3H
 
2
O
19.14.29Lazulite
(Mg,Fe
2+
 
)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
19.14.30Scorzalite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
19.14.31Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.32Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.33Zaïrite
Bi(Fe
3+
 
,Al)
 
3
(PO
 
4
)
 
2
(OH)
 
6

Other Names for Burangaite

Synonyms:
IMA1976-013
Other Languages:
German:Burangait
Russian:Бурангаит
Spanish:Burangaita

Other Information

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

References for Burangaite

Reference List:

- +
von Knorring, O., Lehtinen, M. and Sahama, T.G. (1977) Burangaite, a new phosphate mineral from Rwanda. Bulletin of the Geological Society of Finland 49, 33-36.

EK R., NYSTEN P. (1990: Phosphate mineralogy of the Hålsjöberg and Hökensås kyanite deposits. Geol. Fören. Stockholm Förhandl., 112, 9-18.

Selway, J.B., Cooper, M.A. and Hawthorne, F.C. (1997) Refinement of the crystal structure of burangaite. Canadian Mineralogist 35, 1515-1522.

American Mineralogist: 63: 793.

Atencio, D., J.M.V. Coutinho, Y.P. Mascarenhas, and J.A. Ellena (2006): "Matioliite, the Mg-analog of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences". Am. Mineral. 91:1932-1936.

Internet Links for Burangaite

Search Engines:
  • Look for Burangaite on Google
  • Look for Burangaite images on Google
    • External Links:
  • Look for Burangaite on Webmineral
  • Look for Burangaite on Athena Mineralogy[Link Broken?]
  • Look for Burangaite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Burangaite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Top quality minerals from Kristalle of California
  • The Arkenstone - Fine Minerals
  • Search for minerals at Heliodor
  • Find Burangaite on www.crystalclassics.co.uk
  • SpiriferMinerals.com - high quality low prices
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Search for Burangaite from all mineral dealers at minfind.com
  • By minerals from YourMineralCollection
  • High-end worldwide specimens & outstanding customer service
  • Buy RARE Minerals from Rocks of Africa
  • Search for - Burangaite - on e-Rocks Mineral Sales & Auctions
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Burangaite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Austria
     
    • Carinthia
      • Millstatt lake ridge
        • Spittal
          • Millstatt lake
    		Walter, F. & Ettinger, K. (2001): 1250. Burangait vom Hochgosch, Millstätter See-Rücken. Pp. 149-150 in NIEDERMAYR, G., F. BERNHARD, G. BLASS, H.-P. BOJAR, F. BRANDSTÄTTER, K. ETTINGER, H.-W. GRAF, V. M. F. HAMMER, B. LEIKAUF, H. MEDITZ, B. MOSER, W. POSTL, J. TAUCHER & P. TOMAZIC (2001): Neue Mineralfunde aus Österreich L. Carinthia II, 191./111.: 141-185; Am. Min. 91, 1932-1936 (2006)
    Carinthia II (2000)
    Rwanda
     
    • Western Province
      • Gatumba District
    		Bul. Geol. Soc. Fin. 49 (1977), 33; HB4 (2000)
    Sweden
     
    • Värmland
      • Torsby
    		EK R., NYSTEN P. (1990) Phosphate mineralogy of the Hålsjöberg and Hökensås kyanite deposits. Geol. Fören. Stockholm Förhandl., 112, 9-18.
    USA
     
    • Nevada
      • Eureka Co.
        • Maggie Creek District
    		MinRec 26(5):449-469.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 22nd Aug 2011 14:50:47
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds