Calcite Collection (#3)

Millerite in calcite groundmass, close-up

New Zealand, North Island, stichtite, orange calcite, goodlitite, amethyst, and pink tourmaline from the Coromandel area

Coral limestone, formed from calcareous remains of fossil coral

Franklinite crystals in calcite groundmass, close-up

Scalenohedral calcite, close-up

Cleaved calcite rhombs, close-up

Prehnite crystals and massive calcite in groundmass

Pieces of calcite, blue aragonite, opal, sodalite, wernerite

Brown monticellite with green apatite and calcite

Columnar calcite, fluorescent

Calcite sculptural group portraying pharaoh Tutankhamen standing beside enthroned god Amon from Thebes, New Kingdom
Egyptian civilization, New Kingdom, Dynasty XVIII. Calcite sculptural group portraying pharaoh Tutankhamen standing beside enthroned god Amon. From Thebes

Underwater limestone cave formations C015 / 3977
Underwater limestone cave formations with scuba divers. These formations are in Chandelier Cave, located near Koror, in Palau, a group of islands in Micronesia, in the Western Pacific Ocean

Underwater limestone cave formations. These formations are in Chandelier Cave, located near Koror, in Palau, a group of islands in Micronesia, in the Western Pacific Ocean

Rock archway, Egypts White Desert. This structure has been formed by wind erosion of the white chalk that forms the desert sands in this region

Clouds and rocks, Egypts White Desert. Photographed in the White Desert (Sahara el Beyda) in Western Egypts Libyan Desert, part of the Sahara

Rock formation, Egypts White Desert. This structure has been formed by wind erosion of the white chalk that forms the desert sands in this region

Moon and rocks, Egypts White Desert. Photographed in the White Desert (Sahara el Beyda) in Western Egypts Libyan Desert, part of the Sahara

Calcite formations, Egypts White Desert. Photographed in the White Desert (Sahara el Beyda) in Western Egypts Libyan Desert, part of the Sahara

Rock formations, Egypts White Desert. These structures have been formed by wind erosion of the white chalk that forms the desert sands in this region

Calcium carbonate, SEM C017 / 8495
False-coloured Scanning Electron Micrograph (SEM) of microscopic crystals of calcium carbonate. Calcium carbonate has many polymorphs (different shaped) crystal forms

Calcium carbonate, SEM C017 / 8497
False-coloured Scanning Electron Micrograph (SEM) of microscopic crystals of calcium carbonate. Calcium carbonate has many polymorphs (different shaped) crystal forms

Calcium carbonate, SEM C017 / 8491
False-coloured Scanning Electron Micrograph (SEM) of microscopic crystals of calcium carbonate. Calcium carbonate has many polymorphs (different shaped) crystal forms

Chalcocite crystals C016 / 5658
Chalcocite (copper sulphife). Dull black twinned crystal with white calcite (schiefer spar). Specimen from the Levant mine, St. Just, Cornwall, UK

Lascaux cave paintings replica workshop C013 / 7371
Lascaux cave paintings replica workshop. The original Lascaux cave was closed to the public in 1963, with the Lascaux II replica opening nearby in 1983

calcite veining in limestone
Calcite (calcium carbonate) veining in limestone. Photographed in Cape Range National Park, Australia

Fluorite crystals C013 / 6697
Fluorite crystals. This sample is a mixture, and includes calcite, galena and pyrite. This specimen is from Glengowla East Mine, Oughterard, County Galway, Ireland

Calcite C013 / 6674
Calcite. Sample of rock containing calcite (white) crystals. Calcite (calcium carbonate CaCO3) is the most important and widespread carbonate mineral on earth. Specimen from Tennesee, USA

Calcite C013 / 6639
Calcite consists almost entirely of calcium carbonate. It is the main constituent of limestone and marble. This is a specimen of Iceland spar from Rodefjord, Iceland

Double refraction in a calcite crystal C013 / 6638
Double refraction (birefringrnce) in a calcite crystal. this phenomenon occurs where a material is not uniform and affects light differently in different directions (anisotropy)

Double refraction in a calcite crystal C013 / 6637
Double refraction (birefringrnce) in a calcite crystal. this phenomenon occurs where a material is not uniform and affects light differently in different directions (anisotropy)

Coccolithophorid plankton, SEM C013 / 5109
Coccolithophorid plankton. Coloured scanning electron micrograph (SEM) of the external mineralised structure (coccosphere) of a small marine algal organism called a coccolithophore

Silver wire
Found in the Kongsberg mines in Norway, this specimen still has its long wires attached to the white calcite in which they grew

Brasilia bradfordensis, ammonite
This Middle Jurassic ammonite has been sectioned to show its chambers with calcite crystals formed in some and hardened mud in others. The body chamber is missing

Ceratolithoides aculeus, coccolith
Scanning electron microscope image of an isolated coocolith from Cretaceous chalk. These are thin calcite shells protecting the coccolithophore within

Florosphaera profunda, coccolith
Scanning electron microscope image of a complete sphere of coccoliths from modern oceans. These are thin calcite shells protecting the coccolithophore within

Plate 42 from Mineralogie Volume 1 (1790)
Coupe de la corne d ammons don?t chacunes des cazes, renferme une variete particuliere du Spath calcaire. From Recuille complet de Mineralogie? vol.1 (1790) by F.L. Swebach Desfontaines

Quaternary fissure breccia
Watercolour drawing of a fissure breccia from the Quaternary period (Pleistocene Epoch or Ice Age), fossilised with mammalian bones. From a collection of original watercolour drawings, c

Fluorite, pale green octahedron
With calcite, galena and pyrite. Its properties include fluorescence and cubed crystals. Specimen from Glengowla East mine, Oughterard, Co. Galway, Eire

Coccoliths
Scanning electron microscope (SEM) image of coccoliths, these are the limestone scales surrounding the marine phytoplankton coccolithophores

Chalcosine
Dull black twinned crystal with white calcite (schiefer spar). From the Levant mine, St. Just, Cornwall, UK

Cenoceras pseudolineatus, nautiloid
A section cut and polished through Jurassic nautiloid from Dorset, UK. Shows the internal chambers filled or partly filled with calcite. Diameter 7cm

Franklinite, fluorescing
Ore of zinc fluorescing under ultra violet radiation: calcite - pink; willemite - green; zincite - blue; franklinite - black. See image number 388 for white light view

Micraster coranguinum, echinoid
This a common heart-shaped Cretaceous sea-urchin originates from the Upper Chalk. This specimen is preserved in its original calcite and its length is around 6cm

Axopodorhabdus albianus, coccolith
Scanning electron microscope image of a Cretaceous coccolith from Folkestone Chalk (x 10, 000 on a standard 9 cm wide print)

Calcite Iceland

Calcite group

Green calcite

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Calcite, a fascinating mineral with a rich history and diverse forms, has captivated scientists and enthusiasts alike. Plate 1 from Histoire naturelle? (1789) showcases the intricate beauty of Discosphaera tubifera, a coccolithophore adorned with delicate calcite plates. Picture No. 11050139 transports us to the mesmerizing world of Emiliana huxleyi, another coccolith species boasting stunning calcite structures. But calcite's allure extends beyond microscopic wonders; it can be found in various macroscopic forms as well. Franklinite, an ore abundant in zinc, often accompanies this versatile mineral. Iceland spar is yet another manifestation of calcite's splendor - its transparent crystals have been used for centuries to create optical instruments. Nature never ceases to amaze us: Cave Pearls are formed when dripping water laden with calcium salts deposits layers upon layers around tiny particles. These exquisite formations resemble shimmering pearls hidden within caves' depths. Even ancient civilizations recognized the magnificence of calcite. The Statue of Amenhotep III (Neb-Maat-Ra) and Sobek stands as a testament to Egypt's reverence for this stone during c. 1390-1352 BCE. Similarly, Mesopotamia showcased their admiration through artifacts like cylinder seals made from white calcite and Baboons statues dating back to the Early Dynastic Period. Traveling further east brings us Septarian concretion or septarian nodules discovered in Morocco - geological marvels that exhibit intricate patterns created by minerals such as calcite over millions of years. Lastly, we encounter the Bactrian statuette known as La Balafre (the Scarred One), showcasing how artists sculpted this captivating material into unique representations throughout history. From its presence in marine microorganisms to its use in art and industry across cultures and time periods, there is no denying the enduring fascination with calcite.