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The nature of chrysocolla from Inspiration Mine, Arizona

Ming-Shan Sun

1963enchrysocollamineralsgeologycopperArizona

Abstract

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Abundant chrysocolla occurs in the oxidation zones of the metallized Precambrian Pinal schist and Tertiary Schultze granite in the vicinity of Inspiration Mine, Arizona. This study aims to characterize the chemical and structural properties of chrysocolla found in this region. Through the application of DTA, dehydration, infrared, and X-ray diffraction studies on samples, it was found that chrysocolla is not a definite chemical compound but rather a hydrogel primarily composed of SiO2, CuO, and H2O, with minor constituents including Al2O3, CaO, and MgO. The research reveals the presence of a cryptocrystalline phase within the chrysocolla, which remains compositional undetermined. The findings suggest that chrysocolla does not exhibit a montmorillonite structure. The color and colloidal structure of chrysocolla samples vary, indicating a formed colloidal process, primarily associating with opal and quartz. The index of refraction of the chrysocolla grains varies from 1.45 to 1.55, depending on the type of chrysocolla observed. These insights provide a deeper understanding of the mineral's formation and association within its geological context.

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@article{53df2043-f13d-4c8d-ac32-40d6479840dd,
  title={The nature of chrysocolla from Inspiration Mine, Arizona},
  author={Ming-Shan Sun},
  year={1963},
  language={en}
}
TY  - JOUR
TI  - The nature of chrysocolla from Inspiration Mine, Arizona
AU  - Ming-Shan Sun
PY  - 1963
LA  - en
ER  -

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