Aeschynite-(Nd) from
Chungju deposit, Mt. Eorae, Joongwon-gun, Chungju City, North Chungcheong Province, South Korea
Locality type: | Deposit | |
Classification | ||
---|---|---|
Species: | Aeschynite-(Nd) | |
Formula: | (Nd,Ln,Ca)(Ti,Nb)2(O,OH)6 | |
Comments: | main ore mineral of deep horizonts of Q-KFS metasomatites. In silicified recrystallized zones and in pegmatites form well shaped crystals, may be the best in the world. аn.13 (Nd0.24Ce0.15Y0.07Sm0.06Pr0.04Gd0.03Ca0.29Th0.08U0.01)0.97(Nb1.12Ti0.88)2O5.80(OH)0.20 calcian variety, аn.14 (Nd0.22Ce0.15Y0.08Sm0.07Pr0.04Gd0.03Dy0.03Ca0.14Th0.14)0.90(Nb0.92Ti1.00Fe3+0.08)2O5.50(OH)0.50 thorian variety, ан.19 (Nd0.18Y0.18Ce0.14Sm0.07Pr0.04Gd0.04Dy0.02Ca0.18Fe2+0.04Th0.07U0.02)0.98(Nb0.94Ti1.06)2O5.80(OH)0.20 yttrian variety transitive to aeschynite-(Y) | |
Habit: | tabular crystals up to 1.5 cm long | |
Colour: | redish-brown | |
Luminescent properties: | none | |
Quality for species: | Excellent - world class for species or very significant. (!!) | |
Abundance at site: | Common | |
Confirmation | ||
Validity: | Confirmed | |
Confirmation Methods: | SEM-EDS | |
Associated Minerals Based on Photo Data: | ||
Zircon | ⓘ1 photo of Aeschynite-(Nd) associated with Zircon at this locality. | |
Quartz | ⓘ1 photo of Aeschynite-(Nd) associated with Quartz at this locality. | |
Ferriallanite-(Ce) | ⓘ1 photo of Aeschynite-(Nd) associated with Ferriallanite-(Ce) at this locality. | |
Fluorite | ⓘ1 photo of Aeschynite-(Nd) associated with Fluorite at this locality. | |
Data | ||
Mineral Data: | Click here to view Aeschynite-(Nd) data | |
Locality Data: | Click here to view Chungju deposit, Mt. Eorae, Joongwon-gun, Chungju City, North Chungcheong Province, South Korea | |
Photo Gallery | View Gallery (2 photos) | |
Data Identifiers | ||
Mindat Occurrence Record ID: | 267259 | |
Long-form Identifier: | 1:3:267259:5 | |
GUID (UUID V4): | 29d48c95-9ba8-4f2e-8e51-6c9d01c9cf81 | |
References | ||
Chungju deposit, Mt. Eorae, Joongwon-gun, Chungju City, North Chungcheong Province, South Korea