Figure 8. Graphic texture in granite. This texture is an intergrowth of feldspar (white) and quartz (gray) in thin layers that resemble cuneiform or hieroglyphic writing. The texture is particularly well displayed to the left of the penny. This texture often indicates that the cooling magma contained a lot of fluids (mostly water) at the time of crystallization.

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Last updated on January 6, 2012

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