thumbnail

Mineralogical studies of the nitrate deposits of Chile. V. Iquiqueite, Na4K3Mg(CrO4)B24O39(OH).12H2O, a new saline mineral.

American Mineralogist

By:
, , , and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

Iquiqueite (Na4K3Mg(CrO4)B24O39(OH).12H2O, a 11.6369(14), c 30.158(7) A, P31c, Z = 3) occurs as a widespread minor constituent in the nitrate fields of northern Chile. It is particularly abundant in the vicinity of Zapiga, Tarapaca province. Associated minerals include nitratite, halite, nitre, darapskite, blodite, glauberite, dietzeite, bruggenite, ulexite and gypsum. Iquiqueite forms thin, yellow, hexagonal platelets (5-50 mu m in diameter, <5 mu m in thickness) that are disseminated singly or in vermiform aggregates in nitrate ore. Observed forms are c(0001) and m(1010). Cleavage is perfect on (0001) and imperfect on (1010); H. = or <2. D(calc.) 2.05 g/cm3 and measured sp. gr. 2.05 + or - 0.09. The mineral is uniaxial negative, epsilon 1.447(2), omega 1.502(2). The XRD pattern has the six strongest lines 3.02(100), 2.856(100), 10.11(85), 6.04(85), 3.28(85), 3.22(85) A. The name is for the city of Iquique, Chile.-J.A.Z.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Mineralogical studies of the nitrate deposits of Chile. V. Iquiqueite, Na4K3Mg(CrO4)B24O39(OH).12H2O, a new saline mineral.
Series title:
American Mineralogist
Volume
71
Issue:
5-6
Year Published:
1986
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
American Mineralogist
First page:
830
Last page:
836
Number of Pages:
7