How does granite outdoor ottoman mineral composition affect thermal shock resistance?

Granite outdoor ottomans are prized for their durability and aesthetic appeal, but their resistance to thermal shock—sudden temperature changes—depends heavily on their mineral composition. Granite primarily consists of quartz, feldspar, and mica, each contributing uniquely to thermal stability.

Quartz, making up 20-60% of granite, has high thermal conductivity, helping distribute heat evenly and reducing stress from rapid temperature shifts. Feldspar, another major component, offers moderate resistance but can weaken if exposed to prolonged moisture. Mica, though less abundant, may crack under extreme thermal stress due to its layered structure.

The interplay of these minerals determines how well a granite ottoman withstands outdoor conditions. Higher quartz content generally improves thermal shock resistance, while excessive mica can create vulnerabilities. Proper sealing and maintenance further enhance performance, ensuring longevity in fluctuating climates.

Understanding these factors helps in selecting a granite ottoman that balances beauty and resilience for outdoor use.