Английская Википедия:Djerfisherite

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Infobox mineral

Djerfisherite is an alkali copper–iron sulfide mineral and a member of the djerfisherite group.

The chemical composition is somewhat variable. A Russian study from 1979 on djerfisherite from the Kola Peninsula found the formula Шаблон:Chem, but a study in 2007 of a samples from Siberia found no detectable sodium and states that the formula Шаблон:Chem is considered the most appropriate.[1] Both crystallographic studies have 58 atoms per unit cell. Sulfur atoms are in three nonequivalent locations, containing 12, 6, and 8 atoms per unit cell. The later study put a copper atom where the earlier study put a sodium atom.[2] More information on the structure and other questions is available,[1] as well as 3-D models.[3]

The Webmineral "Mineralogy Database" site gives the "chemical formula" as Шаблон:Chem, apparently in error, and an "empirical formula" as Шаблон:Chem.[4]

Its type locality is the Kota-Kota meteorite (Marimba meteorite), Malawi. It was first described in 1966 and named after professor Daniel Jerome Fisher (1896–1988), University of Chicago.[3] It has been reported from meteorites, copper-nickel hydrothermal deposits, skarn, pegmatite, kimberlites and alkalic intrusive complexes. Associated minerals include kamacite, troilite, schreibersite, clinoenstatite, tridymite, cristobalite, daubreelite, graphite, roedderite, alabandite, talnakhite, pentlandite, chalcopyrite, magnetite, valleriite, sphalerite and platinum minerals.[5]

References

Шаблон:Reflist


Шаблон:Sulfide-mineral-stub

  1. 1,0 1,1 Шаблон:Cite journal
  2. Шаблон:Cite web
  3. 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок Mindat не указан текст
  4. Ошибка цитирования Неверный тег <ref>; для сносок Webmin не указан текст
  5. Ошибка цитирования Неверный тег <ref>; для сносок HBM не указан текст