Geo Advent Calendar Day 1

2016 is almost over, it’s December already! I assume most people have already opened the first door on their chocolate-filled advent calendars, but I thought of something even better: a ‘geo advent calendar’ which is filled with rocks, minerals and fossils! So, in the run-up to Christmas, I’ll post about an object from my collection; you’ll also be able to find them under the #GeoAdventCalendar hashtag on Twitter. Let’s have a look behind door number one…


Accession Number C0028
Status Accessioned
Specimen Type Rock
Brief Description Serpentinite
Full Description Bastite serpentinite, a dense, altered peridotite. Reddish-brown with black veins. Has <1cm golden, platy crystals of bastite (an altered orthopyroxene which has been pseudomorphed by serpentine or an intergrowth of talc and tremolite). Some parts are covered in green, translucent antigorite/chrysotile crystals which form slickenlines. From the Lizard Peninsula, Western Tectonic Unit (obducted oceanic crust); an example of a rock from above the petrological Moho
Quantity 1
Age (Ma) 419-359
Location Kynance Cove, Cornwall, England
Collector Nadine Gabriel
From Fieldtrip? GEOL1002: Petrology to Petrogenesis, 2014-04-01 to 2014-04-05
Associated Notebook? Notebook 5, pages 54-58, locality 15, sample 6
Acquisition Method Collected
Acquisition Date 2014-04-04

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