Where is Quartzite Pebble found?
Metamorphic Quartzite
Got a photo? Identify rocks instantly with the Rockby app
Open the appQuartzite Pebble 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 Quartzite Pebble
Appalachian Mountains, USA
Extensive quartzite formations (e.g., Erwin Quartzite, Weverton Formation) are found, leading to abundant quartzite pebbles in rivers and streams draining the range.
Canadian Shield, Canada
Ancient Precambrian quartzites are common, and their eroded pebbles are widespread in glacial deposits and river systems.
Brazil
Significant quartzite deposits, particularly in Minas Gerais, are known for high-purity quartzite, leading to pebbles in local waterways.
Australia
Various regions, including parts of Western Australia and South Australia, contain ancient quartzite units, contributing to pebble deposits.
Scandinavia
Glacial processes have transported quartzite pebbles from bedrock sources across the region, depositing them in moraines and outwash plains.
Collecting tips
- Look in Riverbeds and Beaches. Quartzite pebbles are extremely resistant to abrasion and chemical weathering, so they are commonly found in high-energy sedimentary environments where other rock types have been broken down or dissolved.
- Check Glacial Deposits. Glaciers are powerful transporters of rock. Moraines, eskers, and outwash plains often contain a diverse mix of rock types, including durable quartzite pebbles, transported from distant bedrock sources.
- Perform a Scratch Test. Quartzite is very hard (Mohs 7). It will scratch steel and glass. If you find a hard, fine-grained, light-colored pebble that scratches glass, it's a strong indicator of quartzite. Sandstone, while also quartz-rich, will often feel gritty and individual grains may rub off, whereas quartzite is cohesive.
- Examine Fresh Breaks. If possible, break a small piece off the pebble (with caution and appropriate safety gear). A fresh fracture surface of quartzite will appear sugary or glassy and will cut across the individual quartz grains, unlike sandstone where the break tends to go around the grains.
Quick Check
- Color:
- White, gray, pink, red, yellow, green, blue
- Luster:
- Vitreous to greasy
- Streak:
- White (as it is composed of quartz)
Explore Quartzite Pebble
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.