Property Value
id 2704877
igsn 10273/AU2704877
sample_id 2017843900
eno 626211
sampling_feature_name 17GRDD001
sampling_feature_type borehole
sample_type core
sampling_method core diamond
material_class rock
stratigraphic_unit Lander Rock Formation
geological_province None
sample_remark The metasandstone sample was taken from the downhole interval 51–52.6 m in drillhole 17GRDD001 at the Grapple Prospect; it was selected for geochronology to determine the maximum depositional age of the metasedimentary succession hosting mineralisation at the Grapple prospect. The metasandstone is weakly foliated and is subarkose, containing medium- to coarse-grained, poorly-sorted, sub-angular to sub-rounded quartz and feldspar. The dominant mineral is quartz, with grain size ranging from 20 μm to 1 mm. Feldspar (K-feldspar and plagioclase) comprises 10–20% of the rock and ranges up to 1 mm in size. Micas (biotite and muscovite) constitute ~5 vol% of the rock; trace to minor opaque oxide minerals and zircon are also identified.
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 EFTF - Isotopic Atlas of Australia
gda94_longitude 129.8385221
gda94_latitude -23.0633693
sample_originator Champion, D.C.
date_acquired None
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