Where is Garnet found?
Garnet group mineral
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Open the appGarnet 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 Garnet
India
Significant source of almandine and pyrope garnets, particularly from Rajasthan and Odisha.
Sri Lanka
Known for various garnet varieties, including almandine and spessartine, often found in alluvial deposits.
Brazil
Produces spessartine, almandine, and grossular garnets, with notable occurrences in Minas Gerais.
United States
Idaho (star garnets), North Carolina (almandine), Arizona (pyrope), Vermont (almandine), and California (grossular, andradite).
Madagascar
A major source of spessartine, grossular (hessonite, tsavorite), and pyrope-almandine garnets.
Russia
Ural Mountains are famous for demantoid (andradite) and uvarovite garnets. Pyrope is found in kimberlites.
Canada
Various occurrences of almandine and pyrope in metamorphic terrains.
Africa (various countries)
Tanzania (tsavorite, rhodolite), Kenya (tsavorite), Namibia (demantoid, andradite), South Africa (pyrope in kimberlites).
Collecting tips
- Look in Metamorphic Rocks. Garnets are characteristic minerals of many metamorphic rocks. Search in schists, gneisses, and amphibolites, especially in areas with evidence of high-grade metamorphism.
- Check Alluvial Deposits. Due to their hardness and resistance to weathering, garnets often accumulate in riverbeds, stream gravels, and beach sands. Panning can be an effective method.
- Examine Skarns. Grossular and andradite garnets are commonly found in skarn deposits, which are contact metamorphic rocks formed at the interface between igneous intrusions and carbonate rocks.
- Identify Crystal Habit. Look for characteristic dodecahedral or trapezohedral crystal forms. Even in massive occurrences, individual crystal faces might be discernible.
- Test Hardness. Garnets are relatively hard (6.5-7.5 on Mohs scale). They will scratch glass and many other common minerals.
- Observe Fracture. The absence of cleavage and presence of conchoidal to uneven fracture is a key diagnostic feature.
Quick Check
- Color:
- Red, orange, yellow, green, brown, black, pink, colorless (variable)
- Luster:
- Vitreous to resinous
- Streak:
- White (for all varieties)
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