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...an old Spanish coin, a means of payment from the Iberian Peninsula made of metal
Rock formations on Oahu coast
rough round agate mineral sample with outer shell geode
prismatic quartz mineral clusters on rock specimens from the UK
Texture of old clay wall, shell rock brick
Mica, silicate phyllosilicate.
A view from the Kizilcukur Valley in the Cappadocia region of Turkey
Geysers and Hot Springs at Yellowstone
Marble mining plant at the east of the island. White stone in blocks and gravel. Seaside of the Thracian sea. Porto Vathy, island Thassos (Thasos), Greece.
Bivalvia Fossil inside a limestone rock on moss floor. Gastropods from the jurassic period captured during autumn season.
Plastic polluting the dunes near Tatajuba beach, Camocim, Ceara, Brazil.
Concretion formations in a rock in the Grand Staircase-Escalante National Monument in southern Utah during the fall. Concretions are precipitated mineral deposits that form in the spaces of sedimentary rock.
Apache tear (obsidian) from the USA
Calama, Chile
Boiling water bubbler Geyser. Active geyser with major eruptions. Yellowstone NP, Wyoming, USA
Soil with stones, dry grass and green moss as texture or background.
Outlook over the Kuiseb pass viewpoint in Namibia, an area that strongly resembles a lunar landscape.
Cross section of rock backgrounds
Ancient stone jungle like an alien world
chinese medicine Rhizoma Cibotii, Cibotium barometz
Petrified Forest National Park, a natural attraction place with many petrified tree trunks and fossils, in Arizona, USA.
Acid sulphate mudpool at the Sulphur Flats in Rotorua, New Zealand.
pyrrhotite iron sulfide rare earth mineral
Ammonite in limestone rock (Bavaria, Germany)
Calcareous slope in Costa Rica
Dhofar 007, an eucrite meteorite (achondritic stony meteorites)
Waste water and dirty foam pollute the environment. Sewage or industrial waste
stone Backgrounds
internal tissue of a sea creature's shell. pores. macro photo.
Mammoth Hot Springs feature in Yellowstone National Park
Free Images: "bestof:Fossil-ostreids.jpg en Fossil ostreids from the Neogene of Chubut Argentina es Ostreidos - Cerro Avanzado Puerto Madryn Chubut - Formación Puerto Madryn"
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