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Bushmakinite

Formula:
Pb
 
2
Al[OH|PO
 
4
|VO
 
4
]
System:MonoclinicColour:bright yellow
Lustre:Adamantine, VitreousHardness:3 - 3½
Name:For A. F. Bushmakin (1947-1999), russian mineralogist
This page provides mineralogical data about Bushmakinite.

Classification of Bushmakinite

IMA status:Approved 2001
Strunz 8th edition ID:7/B.24-25
Nickel-Strunz 10th (pending) edition ID:8.BG.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
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Type Occurrence of Bushmakinite

Type Locality:Severnaya Mine, Berezovskoe Au Deposit (Berezovsk Mines), Berezovskii (Berezovskii Zavod), Ekaterinburg (Sverdlovsk), Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia
General Appearance of Type Material:lamellar crystal up to 0.3 mm in size

Physical Properties of Bushmakinite

Lustre:Adamantine, Vitreous
Diaphaneity (Transparency):Translucent
Colour:bright yellow
Streak:pale yellow
Hardness (Mohs):3 - 3½
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Perfect
perfect
Fracture:Irregular/Uneven, Step-Like
Density (calculated):6.22 g/cm3

Crystallography of Bushmakinite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m {P1 1 21/m} {P21/m} {P1 21/m 1}
Cell Parameters:a = 7.734Å, b = 5.814Å, c = 8.69Å
β = 112.1°
Ratio:a:b:c = 1.33 : 1 : 1.495
Unit Cell Volume:V 362 ų
Z:2

Optical Data of Bushmakinite

Type:Biaxial (-)
RI values: nα = 1.990 nβ = 2.030 nγ = 2.060
2V:Calculated: 80°
Maximum Birefringence:δ = 0.070

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

Chemical Properties of Bushmakinite

Formula:
Pb
 
2
Al[OH|PO
 
4
|VO
 
4
]
Essential elements:Al, H, O, P, Pb, V
All elements listed in formula:Al, H, O, P, Pb, V

Relationship of Bushmakinite to other Species

Member of Group:
Brackebuschite Group:
M
2+
2
M
3+
 
[OH|(TO
 
4
)
 
2
]
Related Minerals - Nickel-Strunz Grouping):

- +
8.BG.05Arsentsumebite
Pb
 
2
Cu[OH|SO
 
4
|AsO
 
4
]
8.BG.05Bearthite
Ca
 
2
Al[OH|(PO
 
4
)
 
2
]
8.BG.05Brackebuschite
Pb
 
2
(Mn
3+
 
,Fe
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05Goedkenite
(Sr,Ca)
 
2
Al[OH|(PO
 
4
)
 
2
]
8.BG.05UM1994-19-PO:CuHMoPb
Pb
 
2
CuOHPO
 
4
(Mo,As,Cr,Ga)O
 
4
8.BG.05Tsumebite
Pb
 
2
Cu[OH|SO
 
4
|PO
 
4
]
8.BG.05Arsenbrackebuschite
Pb
 
2
(Fe
3+
 
,Zn
2+
 
)[(OH,H
 
2
O)|(AsO
 
4
)
 
2
]
8.BG.05Feinglosite
Pb
 
2
(Zn,Fe
2+
 
)[OH|SO
 
4
|AsO
 
4
]
8.BG.05Tokyoite
Ba
 
2
(Mn
3+
 
,Fe
3+
 
)[OH|(VO
 
4
)
 
2
]
8.BG.05Calderónite
Pb
 
2
Fe
3+
 
[OH|(VO
 
4
)
 
2
]
8.BG.10Mélonjosephite
CaFe
2+
 
Fe
3+
 
[OH|(PO
 
4
)
 
2
]
8.BG.15Tancoite
LiNa
 
2
Al[OH|HPO
 
4
|PO
 
4
]

Other Names for Bushmakinite

Synonyms:
IMA2001-031
Other Languages:
German:Bushmakinit
Spanish:Bushmakinita

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 Bushmakinite

Reference List:Pekov, I.V., D.A. Kleimenov, N.V. Chukanov, O.V. Yakubovich, V. Massa, D.I. Belakovskiy & L.A. Pautov (2002): Bushmakinite Pb2Al(PO4)(VO4)(OH), a new mineral of the brackebuschite group from the oxidized zone of the Berezovskoye gold deposit, the Middle Urals.- Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132(2) [131(2)??], 62-71.

Internet Links for Bushmakinite

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    Localities for Bushmakinite

    (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.
    Russia
     
    • Urals Region
      • Middle Urals
        • Ekaterinburgskaya (Sverdlovskaya) Oblast'
          • Ekaterinburg (Sverdlovsk)
            • Berezovskii (Berezovskii Zavod)
              • Berezovskoe Au Deposit (Berezovsk Mines)
    		American Mineralogist, Volume 88, pages 475–479, 2003
    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: 10th Nov 2009 09:41:23