Where is Quartz-Mica Schist or Quartzite with Mica found?
SiO2 with phyllosilicates
Got a photo? Identify rocks instantly with the Rockby app
Open the appQuartz-Mica Schist or Quartzite with Mica 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-Mica Schist or Quartzite with Mica
Appalachian Mountains, USA
Extensive exposures of quartz-mica schists and quartzites are found throughout the Appalachian orogen, particularly in the Blue Ridge and Piedmont provinces.
Scottish Highlands, UK
Numerous metamorphic complexes, including the Moine and Dalradian Supergroups, contain abundant quartz-mica schists and quartzites.
Fennoscandian Shield, Scandinavia
Ancient Precambrian terrains exhibit widespread occurrences of these metamorphic rocks.
Himalayan Orogen, Asia
High-grade metamorphic rocks, including quartz-mica schists, are common in the core of the Himalayan mountain range.
Collecting tips
- Look for Foliation. The most distinctive feature is often the parallel alignment of mica flakes, creating a layered or platy appearance. This foliation can be subtle or very pronounced.
- Check Hardness. Quartz is hard (Mohs 7), so the rock will scratch glass. Mica is softer (Mohs 2-3), and individual flakes can be scratched with a fingernail or knife.
- Observe Luster. Look for the characteristic glassy luster of quartz and the pearly or silvery sheen of mica flakes, especially on cleavage surfaces.
- Examine Grain Size. These rocks are typically fine to medium-grained. Individual quartz grains may be visible, and mica flakes will often sparkle in sunlight.
Quick Check
- Color:
- Light to dark gray, white, tan, with sparkling mica.
- Luster:
- Vitreous (quartz) and pearly/sub-metallic (mica).
- Streak:
- White (for both quartz and mica).
Explore Quartz-Mica Schist or Quartzite with Mica
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.