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Anhydrite is a calcium sulfate
Scleractinian coral fossil on a Ammonite fossil. Both from the jurassic period found in the canton of Aargau.
Isolated sample of a shale rock on texture background. shale Metamorphic Rock sample. Shale mineral stone isolated.
kaolinite mineral sample under light microscopy
99.9% fine electrolytic nickel isolated on white background
cross section of a precious mining material
Thread-waisted wasps nest
Fossil wood, cross-section of an ancient tree photo shot on analogue film
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Sea Urchin spine fossil.  The close-up image shows a  sea urchin fossil from the jurassic period inside a limestone.
Muscovite gneiss with large flat single crystals, made of light mica, hand specimen from Germany, Bavaria, Upper Palatinate, stacked photo
chinese medicine  semen momordicae, Momordica cochinchinensis on black background
Fossilized mollusk nummulite on a black background
Magnified close up of stacked focus maroon shale with lichens
Stone of Bauxite
Beautiful crab shell isolated on black background
Geode
Calmitacea inside a peace of stone. The fossil was growing in the Carboniferous Period (around 360 to 300 million years ago).
Close up unique rich beautiful raw wild marble stone texture.  Background for design. Copy space. Macro image. Horizontal image.
chinese medicine  semen momordicae, Momordica cochinchinensis
Layered natural stone with metallic texture  close-up  macro photo.
A scan from film some grain visible of a Japanese branding iron showing a (kanji) character. Shallow focus on the character shot against a black background.
A collection of minerals from the sea on a glass table.
Volcanic Basalt lava rock sample. Cavities due to escaping gas bubbles later filled with mineralisation from groundwater fluids
Fossilized coral branches and fragments offer insights into ancient marine environments, reef development, and ecological conditions over millions of years
Magnified close up of a wavy bumpy sandstone rock with a mineral crust.
Quarts stones and pebbles polishes rocks
Unique underground geology of  stalactites and stalagmites.
An ancient prehistoric piece of mammoth bone isolated on black background. Fifty thousands years old paleontology fossil. For historical magazines or websites, natural science museum books or posters.
Sea Urchin Fossil.  The close-up image shows a  sea urchin fossil from the jurassic period on white background.
Free Images: "bestof:Foraminifera of the Crag BHL10762707.jpg A monograph of the Foraminifera of the Crag 10762707 40756 10191 Foldout pts 1-4 http //www biodiversitylibrary org/..."
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