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Brendelite

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Big Photo

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

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Formula:
(Bi
3+
 
,Pb)
 
2
(Fe
3+
 
,Fe
2+
 
)(PO
 
4
)O
 
2
(OH)
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+
 
)(PO
 
4
)O
 
2
(OH)
Essential elements:Bi, Fe, H, 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+
 
(PO
 
4
)(OH)
 
2
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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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Brendelite details from Handbook of Mineralogy (PDF)
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    • Localities for Brendelite

    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.
    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)
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