Where is Quartz with Mica found?
SiO2 (Quartz) with Mica group minerals
Got a photo? Identify rocks instantly with the Rockby app
Open the appQuartz 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 with Mica
Appalachian Mountains, USA
Extensive metamorphic belts containing mica schists and quartzites are found throughout the Appalachian orogen.
Himalayan Orogen, Asia
High-grade metamorphic rocks, including mica schists and gneisses with abundant quartz, are widespread in the Himalayas.
Fennoscandian Shield, Europe
Ancient Precambrian shield areas often contain various metamorphic and igneous rocks rich in quartz and mica.
Brazilian Shield, South America
Similar to other shield areas, the Brazilian Shield hosts numerous occurrences of quartz-mica bearing rocks.
Collecting tips
- Look for Sparkle. The presence of mica often gives rocks a distinctive sparkle or shimmer when light reflects off the cleavage planes of the mica flakes.
- Examine Texture. In metamorphic rocks, look for foliation (a layered or platy texture) caused by the alignment of mica minerals. In igneous rocks, look for interlocking granular textures.
- Test Hardness. Quartz is hard (Mohs 7) and will scratch glass. Mica is much softer (Mohs 2-3) and can be scratched with a fingernail or knife, and its flakes can be easily separated.
- Observe Cleavage. The perfect basal cleavage of mica is a key diagnostic feature; it allows the mineral to be peeled into thin, flexible sheets.
Quick Check
- Color:
- Variable (colorless, white, gray for quartz; silvery, black, brown for mica)
- Luster:
- Vitreous (quartz) to pearly/vitreous (mica)
- Streak:
- White (for both quartz and most micas)
Explore Quartz with Mica
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.