Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Yttrocrasite-(Y)

This page is currently not sponsored. Click here to sponsor this page.
Formula:
(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
System:
Amorphous
Colour:
Black
Hardness:
5½ - 6
Name:
Named after its chemical composition containing yttrium and from Greek "krasis", "mixture", alluding to the many other elements present.
Euxenite Group.

A poorly characterised metamict mineral.
Compare Polycrase-(Y).

Classification of Yttrocrasite-(Y)

Approved
4.DG.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
8.3.8.4

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
7.9.12

7 : Oxides and Hydroxides
9 : Oxides of Ti
mindat.org URL:
http://www.mindat.org/min-4370.html
Please feel free to link to this page.

First Recorded Occurrence of Yttrocrasite-(Y)

General Appearance of First Recorded Material:
A crystal with a dull brown alteration coating and a black, fresh interior.

Physical Properties of Yttrocrasite-(Y)

Resinous
Colour:
Black
Comment:
Under microscop fragments shows through their edges a amber to light yellow color
Hardness (Mohs):
5½ - 6
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
4.8 g/cm3 (Measured)    

Crystallography of Yttrocrasite-(Y)

Crystal System:
Amorphous
Comment:
Metamict (may have been orthorhombic before metamictisation).

Optical Data of Yttrocrasite-(Y)

Type:
Isotropic

Chemical Properties of Yttrocrasite-(Y)

Formula:
(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Essential elements:
All elements listed in formula:
Common Impurities:
W

Relationship of Yttrocrasite-(Y) to other Species

4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
4.DG.05Fersmite(Ca,Y)(Nb,Ta,Ti)2(O,OH)6
4.DG.05Kobeite-(Y)(Y,Zr)2(Ti,Fe3+)2(O,OH)7
4.DG.05Loranskite-(Y)(Y,Ce,Ca)ZrTaO6 (?)
4.DG.05Polycrase-(Y)(Y,U)(Ti,Nb)2O6
4.DG.05Tanteuxenite-(Y)(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
4.DG.05Uranopolycrase(U4+,Y)(Ti,Nb)2O6
4.DG.10Fergusonite-(Y)-βYNbO4
4.DG.10Fergusonite-(Nd)-β(Nd,Ce)NbO4
4.DG.10Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
4.DG.10Yttrotantalite-(Y)(Y,Ca,U4+,Fe2+)2(Ta,Nb)2O8
4.DG.10Beta-Fergusonite-(Nd)
4.DG.15Foordite(Sn,Pb)(Nb,Ta)2O6
4.DG.15Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6
4.DG.20RaspitePb(WO4)
7.9.1HongquiiteTiO
7.9.2RutileTiO2
7.9.3AnataseTiO2
7.9.4BrookiteTiO2
7.9.5GeikieliteMgTiO3
7.9.6PerovskiteCaTiO3
7.9.7KassiteCaTi2O4(OH)2
7.9.8TausoniteSrTiO3
7.9.9Crichtonite(Sr,La,Ce,Y)(Ti,Fe3+,Mn)21O38
7.9.10Lucasite-(Ce)CeTi2(O,OH)6
7.9.11Hibonite(Ca,Ce)Al12O19
7.9.13PyrophaniteMn2+TiO3
7.9.14IwakiiteMn2+Fe23+O4
7.9.15IlmeniteFe2+TiO3
7.9.16PseudobrookiteFe2TiO5
7.9.17UlvöspinelFe2TiO4
7.9.18PseudorutileFe2Ti3O9
7.9.19FreudenbergiteNa2(Ti,Fe)8O16
7.9.20KennedyiteMgFe23+Ti3O10
7.9.21Armalcolite(Mg,Fe2+)Ti2O5
7.9.22Högbomite(Mg,Fe)2(Al,Ti)5O10
7.9.23Qandilite(Mg,Fe)2(Ti,Fe,Al)O4
7.9.24Cafetite(Ca,Mg)(Fe,Al)2Ti4O12 · 4H2O
7.9.25Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
7.9.26Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38
7.9.27PrideriteK(Ti74+Fe3+)O16
7.9.28Jeppeite(K,Ba)2(Ti,Fe)6O13
7.9.29AnkangiteBa(Ti,V3+,Cr)8O16
7.9.30Ecandrewsite(Zn,Fe2+,Mn2+)TiO3
7.9.31LandauiteNaMnZn2(Ti,Fe)6Ti12O38

Other Names for Yttrocrasite-(Y)

Name in Other Languages:
Simplified Chinese:钛钇钍矿
Spanish:Yttrocrasita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Yttrocrasite-(Y)

Reference List:
Hidden, W.E. and Warren, C.H. (1906): Yttrocrasite, A New Yttrium-Thorium-Uranium Titanate. American Journal of Science, 4th. series: 22: 515-519.

Zambonini (1908), Zs. Kr.: 45: 76.

Palache, Charles, Harry Berman & Clifford Frondel (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 793.

American Mineralogist (1982): 67: 156.

Internet Links for Yttrocrasite-(Y)

Localities for Yttrocrasite-(Y)

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
 
  • Jiangxi Province
    • Ganzhou Prefecture
      • Longnan Co.
Yunhuai Lin and Shiyang Chen (1985): Geology and Prospecting 21(3), 23-31
Russia
 
  • Northern Region
    • Komi Republic
      • Prepolar Ural
        • Kozhim River Basin
          • Maldynyrd range (Maldy-nyrd range)
            • Grubependity Lake
Pavel M. Kartashov data
Sweden
 
  • Värmland
    • Filipstad
      • Persberg district
P.M. Kartashov data
USA
 
  • California
    • Riverside Co.
      • Nuevo
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 390; Mineralogical Record (1976): 7: 182.
  • Texas
    • Burnet Co.
Crook III, W.W (1976): Yttrocrasite from central Texas. Mineralogical Record 7: 182-183
Hidden and Warren (1906), American Journal of Science, 4th. series: 22: 515-519.
    • Llano Co.
      • Bluffton
[MinRec 7:182-183]
Mineral and/or Locality  
Copyright © mindat.org 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: February 2, 2015 00:26:09 Page generated: January 23, 2015 04:57:10