Paragneiss, light micrograph
Migmatite, light micrograph
Orthogneiss, light micrograph
Migmatite
Forbach granite, light micrograph
Forbach granite
Amphibolite, light micrograph
Two-mica granite
Garnet mica schist thin cut, polarised light micrograph
Gneiss with garnet, light micrograph
Granite, polarised light micrograph
Aplite, polarised light micrograph
Mica schist folds, light micrograph
Muscovite and feldspar
Paragneiss
Val Gardena sandstone, light micrograph
Staurolite crystal, light micrograph
Granite
Basalt, light micrograph
Aplite, light micrograph
Brixen granite, light micrograph
Granite, light micrograph
Granodiorite, light micrograph
Staurolite phenocrysts, polarised light micrograph
Gneiss with garnet
Snowball garnet, light micrograph
Garnets in micaschist, light micrograph
Kimberlite rock, light micrograph
Mica schist folds, polarised light LM
Quartz phyllite, light micrograph
Muscovite, polarised light micrograph
Kelephytic corona, light micrograph
Lherzolite rock, light micrograph
Eclogite rock, light micrograph
Rhyolite, light micrograph
Folded strata in gneiss rock
Sample of muscovite
Mica in quartz, light micrograph
Aggregate of muscovite crystals
Fuchsite mineral stone
Val Gardena sandstone
Rhyolite mountain, Iceland
Garnet gemstone
Slate waste
Granodiorite rock, light micrograph
Gabbro microcrystals, light micrograph
Sandstone in chalcedony matrix, polarised light micrograph
Lasa marble, light micrograph
Almandine garnet in mica schist
Almandine
Uvarovite crystals
Garnet crystals on schist
Wollastonite with kolophonite
Almandine crystals in schist
Garnet
Peridotite
Garnet in peridotite
Trachyte. polarised light micrograph
Biotite
Biotite, Tyringham, Massachusetts, USA
Brixen granite
Granodiorite
Muscovite Mica, Ontario, Canada
Muscovite Mica
Muscovite Star Mica
Muscovite, light micrograph
Kyanite and Staurolite crystals
Banded gneiss
Polished specimen of muscovite
Kentallenite - Ballaculish, Scotland, LM
LM of a thin section of gabbro rock
Disthene mineral, light micrograph
Grossular garnet crystals on rock surface
Grossular
Hessonite
Andradite crystals
Almandine mineral sample
Pyrope sand
Garnet-bearing rock
Clinochlore with garnets
Uvarovite garnet crystals
Grossular crystals in host rock
Gemstones and light dispersion
Spessartine garnet
Metamorphic rock
Grossular dodecahedral crystal
Andradite mineral
Demantoid
Almandine crystals
Sandstone in dusty matrix, polarised light micrograph
Gabbro rock, light micrograph
Garnet.
Precious gemstones
Garnet gemstones
Rhyolitic tuff, polarised light micrograph
Quartz Diorite, LM of thin section
Slate quarry waste
Cut Spessartine gemstone
Rare bright green Uvarovite Garnet
Quartz phyllite
Feldspathic gritstone
Gneiss, light micrograph
Aquamarine in muscovite
Aquamarine and muscovite
Aquamarine on muscovite
Melaphyr rock, light micrograph
Sample of gneiss
Ancient Roman columns
Aquamarine in muscovite matrix, close
Muscovite II
Hornblende-biotite granite
Dolerite rock crystals, polarised LM
Garnet gem
Garnet in Schist
Tabular muscovite crystals and apatite
Muscovite crystals in rock groundmass
Muscovite mineral sample
Aquamarine in muscovite matrix
Sample of biotite
Rhyolite