Property Value
id 9655585
igsn 10.60494/et1f-mr02
sample_id SC1 and RO/RB29
eno 917563
sampling_feature_name SC1 and RO/RB29
sampling_feature_type field site
sample_type outcrop specimen
sampling_method outcrop sampling
material_class rock
earth_materials Y
stratigraphic_unit None
geological_province New England Orogen
sample_remark Hornblende gabbro. Offler and Shaw 2006 paraphrased "Analyses were conducted on a deformed and partly recrystallized hornblende gabbro tectonic block in a serpentinite melange, Glenrock Station area. The hornblende gabbro samples collected from various outcrops show considerable variation in mineralogy and texture owing to the deformation and associated alteration that have affected the gabbro and the dikes after their emplacement. Magmatic plagioclase is preserved in most samples, but the mafic minerals are commonly replaced by several generations of amphiboles that have different compositions reflecting the varying conditions (upper amphibolite to prehnite-pumpellyite facies) under which they have formed. Amphiboles of possible magmatic origin show no preferred orientation, replace clinopyroxene (uncommon), and are replaced by metamorphic amphiboles. Many zircon grains show broad bands of dark and light zoning that traverse the grain. The zircons were elobngated and were anhedral to fragmented."
structural_measurements None
inorganic_geochemistry None
organic_geochemistry None
geochronology None
isotope_groups None
hydrochemistry None
rock_properties None
mineralogy None
thin_sections None
repository_samples None
mineral_deposit_samples None
mineral_deposit_waste_samples None
linked_files None
other_geological_data None
project_name None
gda94_longitude 151.4399
gda94_latitude -31.6423
sample_originator Offler, R.
date_acquired 3000-01-01 00:00:00
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