Geo Advent Calendar Day 20

Rocks from my Scotland fieldtrip have featured a lot in the Geo Advent Calendar. Here’s the last Scottish rock in this series of posts – it’s my favourite rock!

Accession Number C0083
Status Accessioned
Specimen Type Rock
Brief Description Syenite
Full Description Canisp porphyry. Has 1cm long phenocrysts of white plagioclase in a pink groundmass, along with hornblende and biotite. One of the two specimens is coated in lichen
Quantity 2
Age (Ma) 444-423
Location Loch Assynt, Scotland
Collector Nadine Gabriel
From Fieldtrip? GEOL3042: Geological and Environmental Mapping, 2015-07-02 to 2015-07-31
Associated Notebook? Notebook 4
Acquisition Method Collected
Acquisition Date 2015-07-26

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