I14. Gabbro - Alkali gabbro (essexite)
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Fact sheet
Description: 

Alkali gabbro, zoned and twinned titanaugite, olivine, groundmass of  plagioclase and nepheline

In Place
In Time
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
Type:
Type: 
igneous
What\
Rock-forming minerals:

Rock forming mineral:

What\