Ximengite
A valid IMA mineral species
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About Ximengite
Formula:
Bi(PO4)
Colour:
Colourless
Lustre:
Vitreous, Greasy
Hardness:
4½
Specific Gravity:
05.534 (Calculated)
Crystal System:
Trigonal
Name:
Named after its discovery locality, the Ximeng tin mining district, Yunnan Province, China.
Type Locality:
This page provides mineralogical data about Ximengite.
Unique Identifiers
Mindat ID:
4337
Long-form identifier:
mindat:1:1:4337:9
GUID
(UUID V4):
(UUID V4):
19537dbd-7f7c-41de-827c-3e2c429c1611
IMA Classification of Ximengite
Approved
Approval year:
1985
Type description reference:
Classification of Ximengite
8.AD.45
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
38.4.9.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
19.10.11
19 : Phosphates
10 : Phosphates of Pb, Th, V and Bi
19 : Phosphates
10 : Phosphates of Pb, Th, V and Bi
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Xim | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ximengite
Vitreous, Greasy
Transparency:
Transparent
Colour:
Colourless
Streak:
white
Hardness:
4½ on Mohs scale
Hardness:
VHN100=279 - 283 - Vickers
Tenacity:
Brittle
Density:
05.534 g/cm3 (Calculated)
Optical Data of Ximengite
Type:
Uniaxial (+)
RI values:
nω = 1.770 nε = 1.770
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Ximengite
Mindat Formula:
Bi(PO4)
Elements listed:
Crystallography of Ximengite
Crystal System:
Trigonal
Class (H-M):
3 2 - Trapezohedral
Space Group:
P31 2 1
Cell Parameters:
a = 6.986(2) Å, c = 6.475(3) Å
Ratio:
a:c = 1 : 0.927
Unit Cell V:
273.67 ų (Calculated from Unit Cell)
Z:
3
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0010600 | Ximengite | Mooney-Slater R C L (1962) Polymorphic forms of bismuth phosphate Zeitschrift fur Kristallographie 117 371-385 | 1962 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.024 Å | (100) |
4.420 Å | (91) |
3.493 Å | (88) |
6.052 Å | (73) |
2.854 Å | (65) |
1.7474 Å | (48) |
2.157 Å | (47) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47c : [Carbonates, phosphates, borates, nitrates] | |
47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Ximengite
General Appearance of Type Material:
Earthy veinlets and irregular granular aggregates of grains <0.001 to 0.1 mm in size.
Place of Conservation of Type Material:
Bureau of Geology and Mineral Resources, Kunming, China.
Geological Setting of Type Material:
Alteration of bismuthinite containing waylandite and monazite.
Associated Minerals at Type Locality:
Reference:
Shi Jiaxin (1989): A new mineral - Ximengite. Acta Mineralogica Sinica [Kuangwu Xuebao] 9(1), 15-19
Synonyms of Ximengite
Other Language Names for Ximengite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
8.AD. | Keplerite | Ca9(Ca0.5◻0.5)Mg(PO4)7 |
8.AD. | Deynekoite | Ca9◻Fe3+(PO4)7 |
8.AD. | Mazorite | Ba3(PO4)2 |
8.AD. | Monazite-(Gd) | Gd(PO4) |
8.AD.05 | Nahpoite | Na2(PO3OH) |
8.AD.10 | Monetite | Ca(PO3OH) |
8.AD.10 | Weilite | Ca(HAsO4) |
8.AD.10 | Švenekite | Ca(H2AsO4)2 |
8.AD.15 | Archerite | (K,NH4)(H2PO4) |
8.AD.15 | Biphosphammite | NH4(H2PO4) |
8.AD.20 | Phosphammite | (NH4)2(PO3OH) |
8.AD.25 | Buchwaldite | NaCa(PO4) |
8.AD.30 | Schultenite | Pb(HAsO4) |
8.AD.35 | Chernovite-(Y) | Y(AsO4) |
8.AD.35 | Dreyerite | Bi(VO4) |
8.AD.35 | Wakefieldite-(Ce) | Ce(VO4) |
8.AD.35 | Wakefieldite-(Y) | Y(VO4) |
8.AD.35 | Xenotime-(Y) | Y(PO4) |
8.AD.35 | Chernovite-(Ce) | (Ce,Y)(AsO4) |
8.AD.35 | Pretulite | Sc(PO4) |
8.AD.35 | Xenotime-(Yb) | Yb(PO4) |
8.AD.35 | Wakefieldite-(La) | La(VO4) |
8.AD.35 | Wakefieldite-(Nd) | Nd(VO4) |
8.AD.35 | Xenotime-(Gd) | Gd(PO4) |
8.AD.40 | Pucherite | Bi(VO4) |
8.AD.50 | Gasparite-(Ce) | Ce(AsO4) |
8.AD.50 | Monazite-(Ce) | Ce(PO4) |
8.AD.50 | Monazite-(La) | La(PO4) |
8.AD.50 | Monazite-(Nd) | Nd(PO4) |
8.AD.50 | Rooseveltite | Bi(AsO4) |
8.AD.50 | Cheralite | CaTh(PO4)2 |
8.AD.50 | Monazite-(Sm) | Sm(PO4) |
8.AD.50 | UM2005-35-VO:CaFePSiTh | (Th,Ca)(VO4,SiO4,PO4) |
8.AD.50 | Gasparite-(La) | La(AsO4) |
8.AD.55 | Tetrarooseveltite | Bi(AsO4) |
8.AD.60 | Chursinite | [Hg2]2+Hg2+2[AsO4]2 |
8.AD.65 | Clinobisvanite | Bi(VO4) |
8.AD.70 | Gurimite | Ba3(VO4)2 |
8.AD.75 | Picaite | NaCa[AsO3OH][AsO2(OH)2] |
Other Information
Notes:
Yellowish green cathodoluminescence under the electron
beam.
beam.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ximengite
mindat.org URL:
https://www.mindat.org/min-4337.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Ximengite
Localities for Ximengite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
China (TL) | |
| Jiaxin Shi (1989) +1 other reference |
DR Congo | |
| analysed (EDS & P-XRD) |
Germany | |
| Dill (2009) |
Italy | |
| Biagioni et al. (2008) |
Poland | |
| Pieczka et al. (2015) +1 other reference |
| Kozłowski et al. (2018) |
Portugal | |
| Cepedal et al. (2013) |
Slovakia | |
| Martin Števko |
Quick NavTopAbout XimengiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Eta-Etu, Bapere, Lubero Territory, North Kivu, DR Congo