Basalt, light micrograph
Gabbro microcrystals, light micrograph
LM of a thin section of gabbro rock
Basaltic dyke, polarised light micrograph
Rhyolite, light micrograph
Pallasite meteorite fragment
Gabbro rock, light micrograph
Granodiorite, light micrograph
Fayalite
Migmatite, light micrograph
Orthogneiss, light micrograph
Paragneiss, light micrograph
Aplite, light micrograph
Brixen granite, light micrograph
Granite, light micrograph
Limburgite
Gneiss with garnet, light micrograph
Kimberlite rock, light micrograph
Hawaiite, thin cut, polarised light micrograph
Peridotite, polarised light micrograph
Rhyolite
Olivine-rich lava
Kentallenite - Ballaculish, Scotland, LM
Martian soil sample, X-ray diffraction analysis
Granite, polarised light micrograph
Aplite, polarised light micrograph
Polarised LM of thin section of gabbro
Lherzolite rock, light micrograph
Pyroxenite rock, light micrograph
Dunite rock, light micrograph
Olivine flakes, light micrograph
Komatitite rock, light micrograph
Peridotite rock, light micrograph
Forbach granite, light micrograph
Granodiorite
Sample of feldspar
Sample of muscovite
Gale Crater, Mars, satellite image
Lapis lazuli, SEM
Gneiss, thin section, polarised LM
Migmatite
Olivine mineral sample
Concentric banding in agate
Agate
Chalcedony
Olivine peridot crystal, close up
Garnet
Rhyolitic tuff, polarised light micrograph
Melaphyr rock, light micrograph
Brixen granite
Barred olivine chondrule
Val Gardena sandstone, light micrograph
Trachyte. polarised light micrograph
Amphibolite, light micrograph
Tourmaline crystal, thin section
Dolerite rock crystals, polarised LM
Gneiss with garnet
Almandine
Tourmaline on quartz
Granodiorite rock, light micrograph
Feldspar and quartz
Stilbite crystal group
Diatomaceous earth quarry
Basaltic dyke rock
Seymchan pallasite
Peridot
Forbach granite
Quartz crystals, SEM
Quartz crystal, SEM
Moss agate
Quartz coated with silica
Citrine
Quartz phyllite, light micrograph
Basalt columns
Meteorite DHO 020-H4_5 Dhofar Oman, LM
Peridot pebble and mixed-cut peridot
Lizardite in serpentine rock
Blue labradorite
Sample of basalt
Melaphyr rock I
Melaphyr rock II
Emerald
Cut pink topaz gemstone
Prehnite and okenite
Tourmaline unworked stones
Olivine inclusion in basalt
Analcime crystal group
Axinite
Black tourmaline, SEM
Zircon crystals on host rock
Sample of andesite
Andesite
Andesite rock, light micrograph
Citrine crystal group
Rock mineral crystals, polarised LM
Rare bright green Uvarovite Garnet
Polished sphere of ocean jasper
Fuchsite mineral stone
Peridot, Pakistan, 129 Carat
Yellow crystal
Fire Opal
Amethyst crystals
Jasper, polarised light micrograph
Agate. polarised light micrograph
Peridot gemstones
Cut Peridot gemstone
Pallasite meteorite
Meteorite Brenham, light micrograph
Meteorite NWA 2957, light micrograph
Meteorite Al Mahbas, light micrograph
Meteorite Fukang China, light micrograph
Meteorite NWA 6435, light micrograph
Two-mica granite
Rhyolite mountain, Iceland
Granite
Quartz nodule, polarised light micrograph
Cut Quartz gemstone
Pink beryl crystal, SEM
Labradorite
Mica in quartz, light micrograph
Mica schist folds, light micrograph