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Brendelite

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Güldener Falk Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
© Stephan Wolfsried

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Formula:
(Bi
3+
 
,Pb)
 
2
(Fe
3+
 
,Fe
2+
 
)[(O,OH)
 
3
|PO
 
4
]
System:MonoclinicColour:dark brown, black
Lustre:Adamantine, VitreousHardness:4½
Name:Named for Christain Friedrich Brendel (1776-1861), mining Director at Schneeberg-Neustädtel, in recognition of his development and application of mechanized mining technology.
This page provides mineralogical data about Brendelite.

Classification of Brendelite

IMA status:Approved 1997
Strunz 8th edition ID:7/B.37-05
Nickel-Strunz 10th (pending) edition ID:8.BM.15

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
M : With medium-sized and large cations, (OH, etc.):RO4 = 4:1
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Type Occurrence of Brendelite

Type Locality:Güldener Falk Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
General Appearance of Type Material:tabular to blocky crystals to 0.3 mm, hemispheres with radiating structure to 3 mm across
Place of Conservation of Type Material:Museum of Mineralogy and Geology, Dresden, Saxony
Associated Minerals at type locality:
PucheritePetitjeaniteNeustädteliteMixiteEulytine
CobaltneustädteliteBismutoferriteBismutiteBeyeriteBeudantite

Physical Properties of Brendelite

Lustre:Adamantine, Vitreous
Colour:dark brown, black
Streak:light brown
Hardness (Mohs):4½
Cleavage:None Observed

Crystallography of Brendelite

Crystal System:Monoclinic

Optical Data of Brendelite

Type:Biaxial (-)
RI values: nα = 2.060 nβ = 2.150 nγ = 2.190
Maximum Birefringence:δ = 0.130

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r < v strong

Chemical Properties of Brendelite

Formula:
(Bi
3+
 
,Pb)
 
2
(Fe
3+
 
,Fe
2+
 
)[(O,OH)
 
3
|PO
 
4
]
Essential elements:Bi, Fe, O, P
All elements listed in formula:Bi, Fe, H, O, P, Pb

Relationship of Brendelite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BM.05Retzian-(Ce)
Mn
2+
2
Ce(AsO
 
4
)(OH)
 
4
8.BM.05Retzian-(La)
(Mn
2+
 
,Mg)
 
2
(La,Ce,Nd)(AsO
 
4
)(OH)
 
4
8.BM.05Retzian-(Nd)
Mn
2+
2
(Nd,Ce,La)(AsO
 
4
)(OH)
 
4
8.BM.10Paulkellerite
(BiO)
 
2
Fe
3+
 
[(OH)
 
2
|PO
 
4
]
8.BM.10Kolitschite
PbZn
 
0.5
Fe
 
3
(AsO
 
4
)
 
2
(OH)
 
6

Other Names for Brendelite

Synonyms:
IMA1997-001
Other Languages:
German:Brendelit
Russian:Бренделит
Spanish:Brendelita

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 Brendelite

Reference List:Krause, W., Bernhardt, H.-J., McCammon, C. and Effenberger, H. (1998): Brendelite, (Bi,Pb)2Fe3+,2+O2(OH)(PO4), a new mineral from Schneeberg, Germany. Mineralogy and Petrology 63, 263-277.

Lapis (2005): 30(7/8): 67.

Internet Links for Brendelite

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  • Look for Brendelite on Wikipedia
  • Look for Brendelite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Brendelite in the Natural History Museum (London) online catalogue
  • Brendelite details from Handbook of Mineralogy (PDF)
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    Localities for Brendelite

    (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.
    Germany
     
    • Saxony
      • Erzgebirge
        • Johanngeorgenstadt District
          • Johanngeorgenstadt
    		Gröbner, J., Grimm, O. & Zienau, H. (2005): Neufunde interessanter Wismut- und Uranmineralien am Schaarschacht, Johanngeorgenstadt, Sachsen. Lapis 30 (6), 44-51; 62.
        • Schneeberg District
          • Neustädtel
    		W. Krause et al.: Mineral. Petrol. 63:263-277 (1998)
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 15th Nov 2009 10:36:53