Feldspathic sandstone
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Fact sheet
Description: 

Darwin wrote: “Sandstone cemented by ochrous particles, upper beds.”

The rock is a poorly sorted sandstone consisting of angular quartz fragments, altered microcline and plagioclase feldspar, and rock fragments.

In Place
In Time
Location description: 
Abrolhos Islets, off the coast of Brazil
Accuracy:
Location precision: 
Good
Timescale:
Not known
Ma = Millions of years ago
In Focus
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Type:
Type: 
sedimentary
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Rock-forming minerals:

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