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Mineralati

Minerals

Polycrase-(Y)

polycrase-(Y)

Y(Ti,Nb)2(O,OH)6

Polycrase-(Y) Mineral Specimen For Sale

Polycrase-(Y) Mineral Specimen For Sale — via www.dakotamatrix.com · Source

Overview

Polycrase or polycrase-(Y) is a black or brown metallic complex uranium yttrium oxide mineral with the chemical formula (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6. It is amorphous. It has a Mohs hardness of 5 to 6 and a specific gravity of 5. It is radioactive due to its uranium content (around 6%). It occurs in granitic pegmatites. Polycrase forms a continuous series with the niobium rich rare earth oxide euxenite. It was first described in 1870 at Rasvåg on the island of Hidra, south of the town of Flekkefjord, Norway. It is found in Sweden, Norway, and the United States.

Scientific references

  1. Polycrase-(Y) — Wikidata. https://www.wikidata.org/wiki/Q3907734 Link
  2. Polycrase-(Y) — Wikipedia. https://en.wikipedia.org/wiki/Polycrase Link