igneous
Granite
Granite (Phaneritic Quartz-Feldspar Rock)
Hardness: 6-7 on Mohs scale; Color: Grayish-white with dark flecks (biotite/hornblende); Luster: Dull to sub-vitreous; Structure: Phaneritic (visible crystals); Cleavage: None (fractures irregularly)
- Hardness
- 6-7 on Mohs scale
- Color
- Grayish-white with dark flecks (biotite/hornblende)
- Luster
- Dull to sub-vitreous
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Grayish-white with dark flecks (biotite/hornblende); Luster: Dull to sub-vitreous; Structure: Phaneritic (visible crystals); Cleavage: None (fractures irregularly)
Formation & geological history
Formed by the slow cooling of silica-rich magma deep underground (plutonic). This specimen likely originates from the Karakoram or Himalayan batholiths, which are tens of millions of years old.
Uses & applications
Extensively used in construction, paving, countertops, and as monumental stone due to its durability and resistance to weathering.
Geological facts
The coordinates provided (35.9°N, 74.4°E) are in the Gilgit-Baltistan region of Pakistan, home to massive granite formations including those that form K2 and other major peaks.
Field identification & locations
Identify in the field by its 'salt and pepper' appearance and the presence of visible interlocking quartz, feldspar, and mica crystals. It is a dominant rock type in high altitude mountain ranges.
