Dissakisite-(Ce) - Mineral specimens search results

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Mineral specimens search results for [ Dissakisite-(Ce) ]

F26RE8: Dissakisite-(Ce) on Dolomite

The mineralogical literature is not clear if we are dealing with Dissakisite-(Ce) or Allanite-(Ce). Both species are the end species of an isomorphic range and most of the samples from Trimouns present colored zones where the darker ones correspond with Allanite-(Ce) (as it is richer in iron) and the lighter areas are Dissakisite-(Ce) We have not analyzed this sample but the uniform color, and especially it lightness, indicate that it is poor in iron so we guess that it is Dissakisite-(Ce)
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France (±1997)
Specimen size: 6.7 × 5.1 × 1.9 cm = 2.64” × 2.01” × 0.75”

TC230AD: Dissakisite-(Ce)/Allanite-(Ce) with Dolomite

Group of doubly terminated crystals of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce). The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with white rhombohedral Dolomite crystals.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 6 × 3.8 × 3.6 cm = 2.36” × 1.50” × 1.42”

Main crystal size: 1.1 × 0.1 cm = 0.43” × 0.04”

TC240AF: Dissakisite-(Ce)/Allanite-(Ce) with Dolomite

Crystal of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce), transparent and lustrous. The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with white rhombohedral Dolomite crystals.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 6.4 × 3.8 × 4.1 cm = 2.52” × 1.50” × 1.61”

TC280AH: Dissakisite-(Ce)/Allanite-(Ce) with Dolomite

Group of crystals of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce). The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with white rhombohedral Dolomite crystals.
This specimen has been published on the Mineralogical Record web page, in the ‘What's New’ section, report 59, March 7, 2021 edition, page 6
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 4.2 × 3.6 × 3.4 cm = 1.65” × 1.42” × 1.34”

Main crystal size: 1 × 0.1 cm = 0.39” × 0.04”

TC280AE: Dissakisite-(Ce)/Allanite-(Ce) with Dolomite

Doubly terminated crystal of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce). The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with white rhombohedral Dolomite crystals.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 4.4 × 3.8 × 2.3 cm = 1.73” × 1.50” × 0.91”

TC380AG: Dissakisite-(Ce)/Allanite-(Ce) with Dolomite and Talc

Doubly terminated, thick crystal of the Dissakisite-(Ce)/Allanite-(Ce) isomorphous series. The majority of Trimouns specimens present color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with Talc crystals and white rhombohedral Dolomite crystals.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 4.8 × 4.2 × 4.1 cm = 1.89” × 1.65” × 1.61”

Main crystal size: 1.4 × 0.2 cm = 0.55” × 0.08”

TC190AC: Dissakisite-(Ce)/Allanite-(Ce) with Hydroxylbastnäsite-(Ce) and Dolomite

Group of crystals of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce). Most of the Trimouns specimens tend to present distinct color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite-(Ce), as they are richer in iron, and the dominant lighter areas to Dissakisite-(Ce). On matrix, with white rhombohedral Dolomite crystals.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 5.9 × 3.8 × 1.1 cm = 2.32” × 1.50” × 0.43”

10NM8: Dissakisite-(Ce)/Allanite-(Ce), Dolomite

Group of doubly terminated crystals of the isomorphous series Dissakisite-(Ce)/Allanite-(Ce). The majority of Trimouns specimens exhibit color zoning that seems to indicate the presence of both species in the same crystal, the darkest areas corresponding to Allanite- (Ce), as they are richer in iron, with the dominant Dissakisite-(Ce) being lighter. On matrix, with white rhombohedral Dolomite crystals. The Trimouns quarry, from which Talc is extracted, is located at an altitude of 1800 meters (5,900 feet), so mining only takes place from April to November.
Trimouns Mine, Luzenac, Haute-Ariège, Foix, Ariège Department, Occitanie France
Specimen size: 3.8 × 3.2 × 3.3 cm = 1.50” × 1.26” × 1.30”

Main crystal size: 0.6 × 0.2 cm = 0.24” × 0.08”

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