Brochantite and azurite crystals
Azurite crystals
Azurite.
Azurite in Limonite Groundmass
Azurite
Brochantite
Malachite and Azurite
Spherical concretions of radiating azurite crystals
Chrysocolla with azurite
A specimen of the mineral azurite found in Eire
Azurite, New Mexico, USA
Azurite, an ore of Copper
Barite crystals
Selenite crystals
Fluorite and barite crystals
Azurite crystals, SEM
Chalcanthite crystals in rock groundmass
Barite and chalcopyrite crystals
Azurite mineral sample
Azurite copper ore stone
Mineral deposition
Gypsum stone
Epsomite, close-up
Polyhalite, close-up
Azurite in host rock
Azurite and malachite deposits
Azurite and malachite
Azurite sample
Gypsum crystals
Celestine crystals in sulphur groundmass
Actinolite crystals
Forms of copper ore
Petrified Wood, New Mexico
Hyalite Opal
Linarite in rock groundmass, close-up
Copper sulphate crystal
Aragonite crystals
Azurite nodule
Nephrite crystals
Barite crystals, an ore of Barium
Azurite on Chrysocolla substrate
Gibbsite
Desert rose
Titanite crystals in actinolite
Hydrated copper sulphate crystals
Realgar with grey quartz
Satin spar, a form of gypsum, close-up
Daisy Gypsum
Selenite gypsum
Magnesite crystals in groundmass
Desert rose barite
A piece of Thenardite
Copiapite
Sample of chalk
Calcite in mudstone
Botryoidal Malachite on chrysocolia
Stalactitic habit of malachite
Fibrous malachite
Variscite, an aluminium phosphate
Barite crystal
calcite veining in limestone
Fluorite crystals
Calcite crystals
Aragonite crystals with sulphur
Glauberite, close-up
Tetrahedrite
Coral calcite crystals
Brazilianite crystals in calcite
Pink calcite crystals
Malachite & Azurite I
Malachite & Azurite II
Actinolite, Chester, Vermont, USA
Calcium carbonate precipitation
Septarian nodule
Rutile crystals
Beryl crystals
Graphite on calcite crystals
Sample of feldspar
Crocoite
Scalenohedral calcite crystals
Jade sword handle
Atacamite and malachite crystals
Artinite crystals in rock groundmass
Quartz encrusted calcite crystals
Ankerite crystals in groundmass, close-up
Apophyllite on calcite
Smithsonite encrustation
Sample of muscovite
Sample of calcite
Flos-ferri aragonite
Cut and polished septarian nodule
Zinc ore under ultraviolet light
Zinc ore
Calcite
Scalenohedral calcite, close-up
Sample of limestone
Stilbite crystal group
Desert rose of gypsum crystals
Crystal Healing Stone Azurite
Actinolite crystals with talc
Botryoidal chalcedony, close-up
Lizardite in serpentine rock
Emerald
藍銅鉱
Barytocalcite crystals in rock groundmass
Actinolite
Hydrated copper sulphate crystals, SEM
Silver crystals in calcite
Rock concretions and minerals
Rhombohedral siderite crystals
Jadeite carved dish from China
Nephrite jade specimen
Axinite
Magnesite vein in igneous rock
Malachite
Magnetite and calcite
Pseudomorphic crystal growth
Zincite in fraklinite
Lithographic limestone
Limestone
Yellow limestone
Aragonite
Cerussite
Chrysocolla mineral
Gneiss with garnet
Stibnite
Copper sulphate crystals light micrograph
Barite crystals, SEM
Chryosprase, a form of chalcedony
Anatase mineral (titanium oxide)
Realgar
Vanadinite crystals
Orpiment on pyrite
Aragonite-covered crayfish
Malachite and chrysocolla minerals
Dioptase crystals in groundmass
Larimar Pectolite
Blue Cavansite rosette in rock groundmass
Nagyagite
Biosphere 2, Arizona, USA
Actinolite, Tyringham, Massachusetts, USA
Flourite crystals
Arsenopyrite
Scolecite
Alum (Aluminum Potassium Sulfate)
Dioptase crystals
Baryte crystals