Yimengite
A valid IMA mineral species
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About Yimengite
Formula:
K(Cr,Ti,Fe,Mg)12O19
Colour:
Black
Lustre:
Metallic
Hardness:
4
Specific Gravity:
4.34
Crystal System:
Hexagonal
Member of:
Name:
Named after its discovery locality, the Yimeng Mts (Yimeng Shan), Shandong Province, China.
Type Locality:
Does not belong to a subgroup of the magnetoplumbite group.
The Cr analogue of UM1994-08-O:CaFeKMgTi.
Occurrence of a "yimengite isomorphous series" is suggested by Lu & Chou (1994).
The Cr analogue of UM1994-08-O:CaFeKMgTi.
Occurrence of a "yimengite isomorphous series" is suggested by Lu & Chou (1994).
Unique Identifiers
Mindat ID:
4361
Long-form identifier:
mindat:1:1:4361:4
GUID
(UUID V4):
(UUID V4):
6fdc82d7-67e5-4c3a-8737-43d21e5bb782
IMA Classification of Yimengite
Approved
IMA Formula:
K[Ti3Cr5Fe3+2Mg2]O19
Approval year:
1982
Classification of Yimengite
4.CC.45
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
7.4.1.2
7 : MULTIPLE OXIDES
4 : AB12X19
7 : MULTIPLE OXIDES
4 : AB12X19
7.14.5
7 : Oxides and Hydroxides
14 : Oxides of Cr
7 : Oxides and Hydroxides
14 : Oxides of Cr
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 |
|---|---|---|
| Yim | 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 Yimengite
Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Brown
Hardness:
4 on Mohs scale
Hardness:
VHN20=273 kg/mm2 - Vickers
Cleavage:
Perfect
{0001}, perfect; {1121}, good; {1011}, poor.
{0001}, perfect; {1121}, good; {1011}, poor.
Density:
4.34 g/cm3 (Measured) 4.35 g/cm3 (Calculated)
Optical Data of Yimengite
Type:
Uniaxial
Reflectivity:
| Wavelength | R1 | R2 |
|---|---|---|
| 402nm | 12.7% | 17.7% |
| 438nm | 11.3% | 18.2% |
| 498nm | 15.1% | 16.0% |
| 548nm | 15.7% | 16.2% |
| 588nm | 13.0% | 16.5% |
| 624nm | 13.5% | 16.7% |
| 641nm | 12.6% | 15.5% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.2%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Gray to grayish white
Pleochroism:
Weak
Chemistry of Yimengite
Mindat Formula:
K(Cr,Ti,Fe,Mg)12O19
Crystallography of Yimengite
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Setting:
P63/mmc
Cell Parameters:
a = 5.875(11) Å, c = 22.9403(54) Å
Ratio:
a:c = 1 : 3.905
Unit Cell V:
685.72 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.630 Å | (100) |
| 2.780 Å | (90) |
| 1.622 Å | (90) |
| 1.475 Å | (80) |
| 1.665 Å | (60) |
| 2.240 Å | (50) |
| 2.450 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Yimengite
General Appearance of Type Material:
Grains (0.5-2 mm); irregular, platy to tabular.
Place of Conservation of Type Material:
National Museum for Geology, Beijing, China, number M09631.
Geological Setting of Type Material:
Metasomatic alteration product of chromian spinel in kimberlites.
Associated Minerals at Type Locality:
Reference:
Dong Zhenxin, Zhou Jianxiong, Lu Qi, and Peng Zhizhong (1983): Yimengite, K(Cr, Ti,Fe,Mg)12O19, a new mineral from China. Chinese Science Bulletin [Kexue Tongbao] 28(15), 932-936
Synonyms of Yimengite
Other Language Names for Yimengite
Relationship of Yimengite to other Species
Member of:
Other Members of this group:
| Chihuahuaite | FeAl12O19 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Hawthorneite Subgroup | ||
| Hibonite Subgroup | ||
| Magnetoplumbite Subgroup | ||
| Mizraite-(Ce) | Ce(Al11Mg)O19 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| UM1994-07-O:BaCrFeMgTi | BaTi5Fe4Mg2CrO19 | |
| UM1994-08-O:CaFeKMgTi | KTi5Fe3Cr2Mg2O19 |
Related Minerals - Strunz-mindat Grouping
| 4.CC. | Xuite | Ca3Fe2[(AlO3(OH)]3 |
| 4.CC. | Allendeite | Sc4Zr3O12 |
| 4.CC. | Bitikleite | Ca3SbSn(AlO4)3 |
| 4.CC. | Yttriaite-(Y) | Y2O3 |
| 4.CC. | Chlorkyuygenite | Ca12Al14O32[(H2O)4Cl2] |
| 4.CC. | Anzaite-(Ce) | Ce3+ 4Fe2+Ti6O18 (OH)2 |
| 4.CC. | Heamanite-(Ce) | (K0.5Ce0.5)TiO3 |
| 4.CC. | Priscillagrewite-(Y) | (Ca2Y)Zr2(AlO4)3 |
| 4.CC. | Saranovskite | SrCaFe2+2(Cr4Ti2)Ti12O38 |
| 4.CC. | Botuobinskite | SrFe2+Mg2(Cr3+6Ti4+12)[O36(OH)2] |
| 4.CC. | Mirnyite | SrZr4+Mg2(Cr3+6Ti4+12)O38 |
| 4.CC. | Haitaite-(La) | LaU4+Fe3+2(Ti13Fe2+4Fe3+)O38 |
| 4.CC. | Shagamite | KFe11O17 |
| 4.CC. | Mizraite-(Ce) | Ce(Al11Mg)O19 |
| 4.CC.05 | Chrombismite | Bi3+16Cr6+O27 |
| 4.CC.10 | Freudenbergite | Na2(Ti,Fe)8O16 |
| 4.CC.10 | Fluormayenite | Ca12Al14O32F2 |
| 4.CC.10 | Fluorkyuygenite | Ca12Al14O32[(H2O)4F2] |
| 4.CC.15 | Grossite | CaAl4O7 |
| 4.CC.17 | Goldschmidtite | KNbO3 |
| 4.CC.20 | Chlormayenite | Ca12Al14O32[◻4Cl2] |
| 4.CC.20 | Unnamed (HBU UK-4) | NaFe2+Zn2(Ti,Fe3+,Nb)6Ti12O38 |
| 4.CC.20 | Paseroite | PbMn2+(Mn2+,Fe3+)2(V5+,Ti,◻)18O38 |
| 4.CC.20 | Mianningite | (◻,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2 (Ti,Fe3+)18O38 |
| 4.CC.20 | UM1987-03-O:FePbTiU | ~(U,Pb)(Ti,Fe3+,Fe2+,Mn)21O38 |
| 4.CC.22 | Kahlenbergite | KAl11O17 |
| 4.CC.22 | Gorerite | CaAlFe3+11O19 |
| 4.CC.25 | Yafsoanite | Ca3Te6+2(ZnO4)3 |
| 4.CC.25 | Nixonite | Na2Ti6O13 |
| 4.CC.30 | Latrappite | Ca2NbFe3+O6 |
| 4.CC.30 | Lueshite | NaNbO3 |
| 4.CC.30 | Natroniobite | NaNbO3 |
| 4.CC.30 | Perovskite | CaTiO3 |
| 4.CC.30 | Barioperovskite | BaTiO3 |
| 4.CC.30 | Lakargiite | Ca(Zr,Sn,Ti)O3 |
| 4.CC.30 | Megawite | CaSnO3 |
| 4.CC.32 | Usturite | Ca3SbZr(Fe3+O4)3 |
| 4.CC.32 | Elbrusite | Ca3(Zr1.5U6+0.5)Fe3+3O12 |
| 4.CC.32 | Dzhuluite | Ca3SbSnFe3+3O12 |
| 4.CC.32 | Monteneveite | Ca3Sb5+2(Fe3+2Fe2+)O12 |
| 4.CC.35 | Loparite-(Ce) | (Na,REE)2Ti2O6 |
| 4.CC.35 | Macedonite | PbTiO3 |
| 4.CC.35 | Tausonite | SrTiO3 |
| 4.CC.35 | Isolueshite | (Na,La)NbO3 |
| 4.CC.35 | Panguite | (Ti,Al,Sc,Mg,Zr,Ca)1.8O3 |
| 4.CC.37 | Pauloabibite | NaNbO3 |
| 4.CC.40 | Crichtonite | Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38 |
| 4.CC.40 | Davidite-(Ce) | Ce(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| 4.CC.40 | Davidite-(La) | La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38 |
| 4.CC.40 | Davidite-(Y) | (La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical) |
| 4.CC.40 | Landauite | NaMnZn2(Ti,Fe)6Ti12O38 |
| 4.CC.40 | Lindsleyite | (Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38 |
| 4.CC.40 | Loveringite | (Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38 |
| 4.CC.40 | Mathiasite | (Mg,Cr,Fe,Ca,K)2(Ti,Zr,Cr,Fe)5O12 |
| 4.CC.40 | Senaite | Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38 |
| 4.CC.40 | Uhligite | Ca3(Ti,Al,Zr)9O20 ? |
| 4.CC.40 | Dessauite-(Y) | (Sr,Pb)(Y,U)(Ti,Fe3+)20O38 |
| 4.CC.40 | Cleusonite | (Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38 |
| 4.CC.40 | Gramaccioliite-(Y) | (Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38 |
| 4.CC.45 | Diaoyudaoite | NaAl11O17 |
| 4.CC.45 | Hawthorneite | BaMgTi3Cr4Fe2+2Fe3+2O19 |
| 4.CC.45 | Hibonite | CaAl12O19 |
| 4.CC.45 | Lindqvistite | Pb2Mn2+Fe16O27 |
| 4.CC.45 | Magnetoplumbite | (Pb,Mn)(Fe,Mn)12O19 |
| 4.CC.45 | Plumboferrite | Pb2(Fe3+,Mn2+,Mg)11O19 |
| 4.CC.45 | Haggertyite | BaFe2+4Fe3+2Ti5MgO19 |
| 4.CC.45 | Nežilovite | PbZn2Mn4+2Fe3+8O19 |
| 4.CC.45 | Batiferrite | BaTi2Fe3+8Fe2+2O19 |
| 4.CC.45 | Chihuahuaite | FeAl12O19 |
| 4.CC.45 | Barioferrite | BaFe3+12O19 |
| 4.CC.45 | Kangite | (Sc,Ti,Al,Zr,Mg,Ca,◻)2O3 |
| 4.CC.50 | Jeppeite | (K,Ba)2(Ti,Fe)6O13 |
| 4.CC.55 | Zenzénite | Pb3Fe3+4Mn4+3O15 |
| 4.CC.60 | Mengxianminite (of Huang et al.) | (Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29 |
Other Information
Notes:
Not soluble in dilute HCl or HNO3.
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 Yimengite
mindat.org URL:
https://www.mindat.org/min-4361.html
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References for Yimengite
Reference List:
Dunn, Pete J., Chao, George Y., Fleischer, Michael, Ferraiolo, James A., Langley, Richard H., Pabst, Adolf, Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (1-2) 214-221
Jambor, J.L., Pertsev, N.P., Roberts, A.C (1996): New mineral Names. American Mineralogist: 81: 769.
Localities for Yimengite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
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Yimeng Mountains, Linyi, Shandong, China