Where is Quartz and Garnet found?

Quartz and Garnet occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.

Where to find Quartz and Garnet

Collecting tips

1. Look for Metamorphic Terrains. Quartz and garnet are classic indicators of medium to high-grade metamorphism. Search in areas mapped as schists, gneisses, or amphibolites.
2. Identify Crystal Shapes. Garnets often form distinctive dodecahedral or trapezohedral crystals, which stand out against the more irregular or prismatic quartz grains.
3. Check for Hardness. Both minerals are relatively hard (Quartz 7, Garnet 6.5-7.5 on Mohs scale), making them resistant to scratching by common objects like steel knives.
4. Observe Luster and Fracture. Quartz typically has a vitreous luster and conchoidal fracture. Garnet also has a vitreous to resinous luster and conchoidal to uneven fracture, but lacks cleavage.
5. Examine Color and Transparency. While quartz can be many colors, colorless to white is common. Garnets are often red, but can be green, orange, or brown. Both can range from transparent to opaque.

Quick Check

Color:

Quartz: Variable (colorless, white, purple, etc.). Garnet: Variable (red, brown, green, etc.).

Luster:

Vitreous to greasy (Quartz), Vitreous to resinous (Garnet).

Streak:

White (for both, as they are harder than the streak plate).

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