Feldspar ternary geological diagram
£3.50
Feldspars are the most common minerals in the Earth’s crust but did you know they come in a lot of flavours? The two main groups are alkali feldspars (made of potassium and sodium) and plagioclase feldspars (which contain sodium and calcium).
A6 print of an original watercolour illustration printed on paper made in Hull from 100% recycled post-consumer waste fibre.
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