Rock coring drill
Pyromorphite
Wulfenite crystals
Dolomite crystals
Kyanite and Staurolite crystals
Fluorite crystals
Fluorite crystal
Cutaway model of the Earth's core
Stibnite crystals
Chromite
Fluorspar crystals
Cassiterite cyrstals, East Pell
Cassiterite crystals
Rutile in Quartz
Fibrous crystals of riebeckite on rock groundmass
Adular sample
Amethyst crystals
Cassiterite tin ore
Arsenopyrite
Aragonite crystals
Chrysotile in groundmass, close-up
Cassiterite crystals in groundmass
Haematite mineral rock
Pyrite crystals in their host rock
Microcline in rock groundmass
Periklin crystals
Fossilised Araucaria seed
Clinochlore crystals in rock groundmass
Aegirine crystal in rock groundmass
Stibnite (Antimonite)
Peridotite rock
Stibnite mineral
Magnetite and calcite
Magnetite in quartz
Cuprocassiterite in quartz mica schist
Tremolite crystals
Pseudomorphic crystal growth
Galenite and quartz crystals
Pyrolusite in quartz
Silver wire, mine specimen
Native copper
Pyrite crystals
Cobaltine mineral, cobalt ore
Molybdenite mineral, molybdenum ore
Cerussite
Azurite sample
Calcite crystal
Native silver crystals
Dolomite
Quartz crystals
Adamite crystals
Childrenite crystal in quartz
Prismatic parallel crystals of allanite
Willemite crystal
Dolomite in Quartz Groundmass
Riebeckite crystals in groundmass
Thin crust of calomel crystals
Fayalite crystals
Porphyritic texture in an igneous rock
Apatite crystals
Tubular hexagons of quartz
Dodecahedral crystal of spessartine
Rhombohedral siderite crystals
Rock salt
Leucite basanite, thin section
Pyroxene crystal, thin section
Pyroxenite mineral, light micrograph
Opalised fossil
Cross-section slice of Brazilian agate
Rhyolite
Vanadinite
Molybdenite
Haematite mineral specimen
Vanadinite hexagonal crystals
Smithsonite
Chalcopyrite, SEM
Stibnite
Fossilised Chamaerops palm
Orbicular diorite rock
Quartzite metamorphic rock
Rock salt crystals
Basaltic dyke rock
Graphic granite rock
Biotite in rock groundmass
Harmotome on rock groundmass
Rutile in rock groundmass
Gabbro rock
Quartz vein in granite
Agate mineral rock cross section
Crimson Erythrite on rock groundmass
Tabular stilbite on rock groundmass
Purple sugilite on rock groundmass
Vanadinite crystals in rock groundmass
Barytocalcite crystals in rock groundmass
Anorthite crystals in rock groundmass
Artinite crystals in rock groundmass
Epidote crystals in rock groundmass
Chalcanthite crystals in rock groundmass
Scapolite crystals in rock groundmass
Bytownite crystals in rock groundmass
Rhodonite crystals in rock groundmass
Bismuthinite crystals in rock groundmass
Muscovite crystals in rock groundmass
Crust of uvarovite on rock groundmass
White Meionite crystal in rock groundmass
Sodalite in rock groundmass, close-up
Beryl in rock groundmass, close-up
Heulandite in rock groundmass, close-up
Scorodite in rock groundmass, close-up
Gadolinite in rock groundmass, close-up
Linarite in rock groundmass, close-up
Iron pyrites
Crystals
Tschermakite crystals
Augelite
Descloizite
Phosphophyllite
Apatite crystal
Twinned staurolite crystals
Malachite mineral sample
Cobalt calcite mineral sample
Selenite mineral sample
Thulite mineral
Berzeliite mineral
Twinned fluorite crystals
Selenite swallow-tail crystals
Clinochlore
Quartz vein
Kyanite mineral
Scolecite mineral
Dioptase
Selenite crystals
Quartz crystal from Sentis, Switzerland.
Sample of pyrite
Malachite
Geode interior
Iron pyrite crystals
Prehnite and okenite minerals
Quartz filled geode
Calcite spherulites
Baryte crystals
Prismatic beryl crystal
Witherite mineral in crystal form
Axinite
Cordaites fossil
Fluorite in dolomite
Chondrodite in rock groundmass
Humite in rock groundmass
Silver deposits in quartzite
Fossilized coral from Carboniferous, LM
Sphalerite and pyrite
Hemimorphite
Spinel in Schist
Pectolite
Cubic perovskite crystals in groundmass
Tourmaline crystals in quartz
Smoky quartz crystals