Task: Text Categorization
Input (English): Hoffland studied how fungi tunnel along natural productivity gradients in types of this mineral. Prevalent in arkose, these framework silicates of aluminum react with water to form kaolinite. High-calcium rocks tend to be enriched in the K-variant and two variants of this mineral in one composition can form intergrowths and twin-wall intersections. Albite and labradorite are examples of a type of one of these that are depicted on the continuous branch of Bowen's reaction series moving from calcium-rich to sodium-rich. Sixty percent of Earth's crust is composed of, for 10 points, what type of mineral that includes plagioclase and orthoclase.
Output (English): Science