Granodiorite
Granodiorite, light micrograph
Brixen granite
Granite, light micrograph
Aplite, light micrograph
Brixen granite, light micrograph
Muscovite and feldspar
Granite
Val Gardena sandstone
Forbach granite
Rhyolite
Val Gardena sandstone, light micrograph
Forbach granite, light micrograph
Ancient Roman columns
Quartz Diorite, LM of thin section
Rhyolite, light micrograph
Granite, polarised light micrograph
Aplite, polarised light micrograph
Quartz vein in granite
Brown granite stone
Amazonite
Orthogneiss, light micrograph
Porphyritic texture in granite
Granite specimen
Devonian slates
Graphic granite rock
Basalt, light micrograph
Quartz mineral stone, light micrograph
Granite rock, light micrograph
Migmatite
Migmatite, light micrograph
Porphyritic microgranite
Granite Tor on Bodmin Moor
Yellow Pollucite in coarse granite
Microcline
Sample of granite
Molybdenite in granite
Titanite bearing granite
Coastal rocks and pebbles
Graphic granite rock, light micrograph
Two-mica granite
Hornblende-biotite granite
Molybdenite in granite groundmass
Zircon crystals on host rock
Paragneiss, light micrograph
Graphic tourmaline, light micrograph
Variety of Igneous Rocks
Obsidian lava
Obsidian rock
A gneiss enclave in granite.
Trachyte. polarised light micrograph
Three types of granite rock
Graphic Granite
White Granite
Rock types
Banding patterns
Granite rock arch in mountains in Namibia
Disintegrated Granite
Granite, Massachusetts, USA
Contact between Granite and Bedrock
Granite boulders and sandy beach
Round granite boulders on coast
Weathered granitic bedrock
Pegmatite dike in granite
A weathered granite boulder
Pink granite rock formation, Brittany, France
Pedestal erratics
Pedestal erratic
Granite on Capo Testa, Sardinia, Italy
Rock formation resembling a face
Eroded rock formation
Sample of muscovite
Granodiorite rock, light micrograph
Quartz phyllite
Aggregate of muscovite crystals
Biotite
Biotite, Tyringham, Massachusetts, USA
Sample of andesite
Andesite
Emerald in host rock
Rough topaz
Muscovite, polarised light micrograph
Gabbro rock, light micrograph
Trachyte
Boulders on raised beach
Arkose, polarised light micrograph
Granite coast in Sardinia
Greenland coastal landscape
Mica schist folds, light micrograph
Tubular hexagons of quartz
Anatextite gneiss
Feldspathic gritstone
Pink granodiorite
Analcime crystal group
Quartz phyllite, light micrograph
Basaltic dyke rock
Lepidolite
Andesite rock, light micrograph
Coastal granite intrusion
Granite, thin section, polarised LM
花崗岩
御影石
Folded strata in gneiss rock
Horns of Torres del Paine, Patagonia
Rhyolitic tuff, polarised light micrograph
Moh's Hardness Scale
Granite pebbles in soft natural tones.
One large and one small granite pebble on black.