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Homework 1: Ternary Diagrams

Given the following diagrams, identify the rocks described below:

Intrusive

Extrusive
1. Phaneritic rock with 32% Quartz, 18% Muscovite, 15% Biotite, 28% Potassic Feldspars, 7% Plagioclase Feldspars
2. Aphanitic rock containing 5% Quartz, 20% Amphible, 15% Biotite, 35% Plagioclase Feldspars, 10% Potassium Feldspars,15% Muscovite

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