Property Value
id 2169175
igsn 10273/AU2169175
sample_id TG001/03
eno 575525
sampling_feature_name SNDD001
sampling_feature_type borehole
sample_type core
sampling_method core diamond
material_class rock
stratigraphic_unit None
geological_province Delamerian Orogen, Grampians-Stavely Zone
sample_remark The sample is a feldspar-phyric dacite. Highly altered feldspar minerals are suspected to be either K-feldspar or plagioclase. Individual phenocrysts are up to 8 mm in length, and show chloritic to sericitic alteration. The groundmass consists of a fine-grained intergrowth of feldspars and quartz, only visible in thin section. In thin section feldspar phenocrysts can be seen to be zoned, and heavily altered to sericite and carbonate. Cracks/veins are filled with later stage quartz. Accessory minerals include pyrite and amphiboles altered to chlorite and minor apatite. Whole rock geochemistry indicates the sample is dacitic (SiO2 wt% = 66.06; Na2O + K2O wt% = 5.12).
earth_materials Y
structural_measurements None
inorganic_geochemistry Y
organic_geochemistry None
geochronology Y
isotope_groups Y
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 142.609954
gda94_latitude -37.6056675
sample_originator Lewis, C.
date_acquired None
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