I09. Diorite - Isle of Mull
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Fact sheet
Description: 

Hornblende biotite microdiorite from the Ross of Mull Caledonian granitoid complex. This specimen has an inclusion of earlier formed quartz diorite/granodiorite. 

In Place
In Time
Location description: 
Costelloe quarry, Co. Galway, Ireland
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
Type:
Type: 
igneous
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Rock-forming minerals:

Rock forming mineral:

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