Manganite
Manganite crystals
Manganite crystals, close-up
Petzite crystals
Pyrite and quartz, crystalline
Tourmaline unworked stones
Leucitite mineral, light micrograph
Wulfenite
Pyromorphite crystals
Quartz and pyrite
Pyrite on quartz
Gabbro rock
Iron pyrite, light micrograph
Wulfenite crystals
Gypsum crystals
Goethite
Olivine inclusion in basalt
Copper oxide crystals, SEM
Pyroxenite mineral, light micrograph
プリズム
Jamesonite
Peridotite rock
Crenulation cleavage in calcite
Zeolite catalyst crystals, SEM
Rock mineral crystals, polarised LM
Selenite mineral, light micrograph
Microdiamond crystal
Mica in quartz, light micrograph
Garnets in micaschist, light micrograph
Mica schist folds, light micrograph
Chemical crystals, polarised LM
Naturally graphite flakes, light micrograph
Staurolite phenocrysts, polarised light micrograph
Hornfels, polarised light micrograph
Quartz nodule, polarised light micrograph
Citrine crystal group
Native silver crystals
Iron pyrites
Crystals
Dolomite
Tschermakite crystals
Ullmannite mineral crystals
Quartz crystals
Boulangerite mineral sample
Augelite
Skutterudite
Phosphophyllite
Fluorite crystals
Apatite crystal
Malachite mineral sample
Cobalt calcite mineral sample
Selenite mineral sample
Thulite mineral
Berzeliite mineral
Twinned staurolite crystals
Twinned fluorite crystals
Clinochlore
Chromite
Quartz vein
Apatite crystals
Fluorspar crystals
Scolecite mineral
Selenite crystals
Porphyritic texture in an igneous rock
Quartz crystal from Sentis, Switzerland.
Sample of pyrite
Prehnite and okenite minerals
Quartz filled geode
Adamite crystals
Calcite spherulites
Autunite crystals, close-up
Childrenite crystal in quartz
Heulandite crystal
Analcime or analcite crystal
Baryte crystals
Prismatic parallel crystals of allanite
Prismatic Piemontite crystals
Prismatic beryl crystal
Lizardite crystal
Monazite crystal
Purple-blue geode
Enargite mineral
Stephanite crystals, close-up
Garnierite crystals on rock surface
Cyanotrichite crystals on rock surface
Ilvaite crystal
Dolomite in Quartz Groundmass
Clinochlore crystals in rock groundmass
Rock Crystal
Aegirine crystal in rock groundmass
Datolite crystals, close-up
Mercury
Arsenic
Riebeckite crystals in groundmass
Astrophyllite
Pyrargyrite crystals, close-up
Microcline in rock groundmass
Albite crystals, close-up
Olivenite
Olivenite crystals
Cuprite crystals
Cassiterite cyrstals, East Pell
Cassiterite crystals
Chalcopyrite crystals
Axinite
Dioptase
Zeolite, polarised light micrograph
Prismatic manganite crystals
Olivenite specimen
Fossilized coral from Carboniferous, LM
Prehnite mineral
Tourmaline crystal, thin section
Ammonite fossil, thin section
Trichroic prism
Light passing through prism
Quartz
Fayalite crystals
Stibnite crystals
Kernite crystal
Braunite
Descloizite
Selenite swallow-tail crystals
Kyanite mineral
Torbernite
Malachite
Geode interior
Iron pyrite crystals
Willemite crystal
Fibrous sillimanite
Prismatic crocoite crystals
Bladed radial form of desert rose gypsum
Adamite mineral
Strontianite mineral
Milky Quartz
Witherite mineral in crystal form
Polybasite crystals, close-up
Wavellite
Mercury, close-up
Smoky Quartz in Milky Quartz Groundmass
Pectolite crystals
Thin crust of calomel crystals
Tooth enamel rods, SEM
Polarised LM of thin section of gabbro
Agate. polarised light micrograph
Natural copper crystal, SEM
Hornblendite rock, light micrograph
Clinoclase crystals
Torbernite cyrstals
Vivianite cyrstals
Cerussite crystals