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Ximengite

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Eta-Etu, Kivu, Democratic Republic of Congo (Zaïre)




Formula:
Bi(PO
 
4
)
System:TrigonalColour:Colourless
Hardness:4½
Name:Named after its discovery locality, the Ximeng tin mining district, Yunnan Province, China.
This page provides mineralogical data about Ximengite.

Classification of Ximengite

IMA status:Approved 1985
Strunz 8th edition ID:7/A.18-30
Nickel-Strunz 10th (pending) edition ID:8.AD.45

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 8th edition ID:38.4.9.1

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
Hey's CIM Ref.:19.10.11

19 : Phosphates
10 : Phosphates of Pb, Th, V and Bi
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Type Occurrence of Ximengite

Type Locality:Amo Sn deposit, Ximeng Co., Pu'er Prefecture, Yunnan Province, China
Year of Discovery:1989

Physical Properties of Ximengite

Lustre:Vitreous, Greasy
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):4½

Crystallography of Ximengite

Crystal System:Trigonal
Cell Parameters:a = 6.98Å, c = 6.47Å
Ratio:a:c = 1 : 0.927
Unit Cell Volume:V 272.99 ų (Calculated from Unit Cell)

Chemical Properties of Ximengite

Formula:
Bi(PO
 
4
)
Essential elements:Bi, O, P
All elements listed in formula:Bi, O, P

Relationship of Ximengite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
Ca(HPO
 
4
)
8.AD.10Weilite
Ca(HAsO
 
4
)
8.AD.10Švenekite
Ca(H
 
2
AsO
 
4
)
 
2
8.AD.15Archerite
(K,NH
 
4
)(H
 
2
PO
 
4
)
8.AD.15Biphosphammite
(NH
 
4
,K)(H
 
2
PO
 
4
)
8.AD.20Phosphammite
(NH
 
4
)
 
2
(HPO
 
4
)
8.AD.25Buchwaldite
NaCa(PO
 
4
)
8.AD.30Schultenite
Pb(HAsO
 
4
)
8.AD.35Chernovite-(Y)
Y(AsO
 
4
)
8.AD.35Dreyerite
Bi(VO
 
4
)
8.AD.35Wakefieldite-(Ce)
Ce(VO
 
4
)
8.AD.35Wakefieldite-(Y)
Y(VO
 
4
)
8.AD.35Xenotime-(Y)
Y(PO
 
4
)
8.AD.35Pretulite
Sc(PO
 
4
)
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)(PO
 
4
)
8.AD.35Wakefieldite-(La)
La(VO
 
4
)
8.AD.40Pucherite
Bi(VO
 
4
)
8.AD.50Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
8.AD.50Monazite-(La)
(La,Ce,Nd)(PO
 
4
)
8.AD.50Monazite-(Nd)
(Nd,La,Ce)(PO
 
4
)
8.AD.50Rooseveltite
Bi(AsO
 
4
)
8.AD.50Cheralite
(Ca,Ce)(Th,Ce)(PO
 
4
)
 
2
8.AD.50Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
8.AD.50UM2005-35-VO:CaFePSiTh
(Th,Ca)(VO
 
4
,SiO
 
4
,PO
 
4
)
8.AD.55Tetrarooseveltite
Bi(AsO
 
4
)
8.AD.60Chursinite
(Hg
+
2
)
 
0.5
Hg
2+
 
(AsO
 
4
)
8.AD.65Clinobisvanite
Bi(VO
 
4
)
Related Minerals - Hey's Index Grouping:

- +
19.10.1 Oxypyromorphite
Pb
 
10
(PO
 
4
)
 
6
O
19.10.2Plumbogummite
PbAl
 
3
(PO
 
4
)
 
2
(OH)
 
5
 · H
 
2
O
19.10.3Kamitugaite
AlPb(UO
 
2
)
 
5
(PO
 
4
,AsO
 
4
)
 
2
(OH)
 
9
 · 5H
 
2
O
19.10.5Drugmanite
Pb(Fe
3+
 
,Al)
 
2
(PO
 
4
)
 
2
(OH)
 
2
19.10.6Brabantite
CaTh(PO
 
4
)
 
2
19.10.8Grayite
(Th,Pb,Ca)(PO
 
4
) · H
 
2
O
19.10.9Brockite
(Ca,Th,Ce)PO
 
4
 · H
 
2
O
19.10.10Sincosite
Ca(VO)
 
2
(PO
 
4
)
 
2
 · 5H
 
2
O
19.10.12Paulkellerite
(BiO)
 
2
Fe
3+
 
(PO
 
4
)(OH)
 
2

Other Names for Ximengite

Synonyms:
IMA1985-004
Other Languages:
German:Ximengit
Russian:Сименгит
Spanish:Ximengita

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 Ximengite

Reference List:

- +
Shi Jiaxin (1989): A new mineral - Ximengite. Acta Mineralogica Sinica [Kuangwu Xuebao] 9(1), 15-19 (in Chinese with English abstract). - Mineralogical Abstracts 41, 472 (abstract).

American Mineralogist (1991), 76, 1436.

Internet Links for Ximengite

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  • Raman and XRD data at RRUFF project
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    • Localities for Ximengite

    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.
    China
     
    • Yunnan Province
      • Pu'er Prefecture
        • Ximeng Co.
    		Jiaxin Shi (1989): Acta Mineralogica Sinica 9(1), 15-19; Daxian Zhao and Guangting Tang (1991): Acta Geologica Sinica 70(1), 42-57
    Democratic Republic of Congo (Zaïre)
     
    • Kivu
    		analysed (EDS & P-XRD) Franz Neuhold
    Italy
     
    • Tuscany
      • Lucca Province
        • Apuan Alps
          • Vergemoli
            • Fornovolasco
    		Biagioni, C., Orlandi, P., & Bonini, M. (2008). Fornovolasco. Storia e minerali delle miniere di ferro presso Vergemoli (Alpi Apuane). Rivista Mineralogica Italiana, 4/2008, 230-252
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    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: 21st Jun 2011 19:14:41
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