Property Value
id 2678820
igsn 10273/AU2678820
sample_id QFG8800A
eno 625740
sampling_feature_name 17NGD026
sampling_feature_type borehole
sample_type core
sampling_method core conventional
material_class rock
stratigraphic_unit Horn Island Granite
geological_province None
sample_remark The sample of Horn Island Granite was collected at the Alice Queen Limited exploration camp on Horn Island, Torres Strait from exploration drillhole 17NGD026 (145.8-149.3 m), drilled by Alice Queen Limited in 2017 on behalf of its subsidiary company, Kauraru Gold Pty Ltd (Hell, 2017). This drillhole intersected gold mineralisation of the Pioneer Reef on the western side of the Horn Island open cut gold mine. The heavily altered porphyritic (micro-) granite is a red to olive green, hornblende-biotite granite with sub-microscopic hematite-dusted K-feldspar phenocrysts (orange, 3 to 18 mm, 20-30%), heavily altered plagioclase phenocrysts (light green to olive, 0.5 to 4 mm, 5-10%) and quartz phenocrysts (light grey, 0.5 to 8 mm), biotite (dark green to black, chlorite-altered, 0.3 to 2 mm) and some altered hornblende (dark green, 1-2 mm). Notably the phenocrysts are significantly larger than the microcrystalline granitic matrix, which consists of very fine-grained quartzo-feldspathic intergrowths, with all feldspar and quartz grains exhibiting anhedral shapes. The sample also shows common thin quartz veins throughout.
earth_materials Y
structural_measurements None
inorganic_geochemistry Y
organic_geochemistry None
geochronology Y
isotope_groups None
hydrochemistry None
rock_properties None
mineralogy None
thin_sections None
repository_samples Y
mineral_deposit_samples None
mineral_deposit_waste_samples None
linked_files None
other_geological_data None
project_name None
gda94_longitude 142.3139757
gda94_latitude -10.6078049
sample_originator Geological Survey of Queensland (GSQ)
date_acquired None
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