PIMA analysis from the Gossan zone showed high temperature clays such as dickite
and alunite associated with the breccias, surrounded by lower temperature argillic alteration (kaolinite).
24 Dacite porphyry (0/-90) with strong silica-alunite- dickite
alteration; moderately oxidized.
5 km and is accompanied by variable amounts of sodium alunite, dickite
, and kaolinite, characteristic of an advanced argillic alteration system.
was recently identified in drill core from the property and may be indicative of high-sulphidation mineralization.
The presence of the clay mineral, dickite
, along pyritic fractures within altered tuffs, is similar to alteration noted in dacitic tuffs that directly overlie variably mineralized basalt at Ivanhoe's Oyu Tolgoi property.
The chemical assays show illite and dickite
clay alteration within the basement graphitic pelites along faulted zones, and in the overlying sandstones as well as increased boron and uranium mineralization near and below the unconformity.
In addition, fault breccia cropping out at Ler Creek assayed 48 g/t Au, was identified as a Dickite
anomaly in the Aster evaluation and requires further assessment.
Fordham GP (1973) Location of iron-55, strontium-85, and iodide-125 sorbed by kaolinite and dickite
On Clara, previous rock and soil sampling, IP and PIMA results have outlined a large dickite
zone which is interpreted to cap a gold-rich silica core.
Here, high sulfidation diagnostic alteration minerals such as dickite
The most significant mineral determined is dickite
, which is indicative of the
Okzhetpes) and reported low-temperature phases such as kaolinite and dickite
, are used to support such an interpretation.