mineral; macro; structure; stone; crystal; geologie; texture; pattern; colourful
15 May 2007, California, USA --- Borax Crystals --- Image by © Visuals Unlimited/Corbis
Amethyst crystals, a variety of Quartz, Brazil, South America.
Wulfenite, an ore of Molybdenum, Arizona, USA.
Orpiment crystals, Nevada, USA
Mimetite, variety Campylite, orange-colored crystals, Kellogg, Idaho, USA
Rutile in Quartz.
Lapis Lazuli, Pakistan.
Table Salt crystals, Sodium Chloride.
Stibnite crystals, the main ore of Antimony, Japan.
Beryl crystals, variety Aquamarine, on Mica, Pakistan.
Calcite crystals, Mexico.
Mica diorite thin section showing component crystals, polarized view. LM
10 Feb 2003 --- Andalusite, cross section of crystals exposed in a cut and polished slate, Morbihan, France --- Image by © Gary Cook, Inc/Visuals Unlimited/Corbis
23 Jun 2006 --- Amethyst crystals --- Image by © Scientifica/Corbis
02 Jan 2010 --- Banded-Iron-Formation (BIF) habitat: Kuruman, Northern Cape, South-Africa; age: ca 2,2 billion years. --- Image by © Walter Geiersperger/Corbis
17 Sep 2009 --- Fossiliferous Limestone sedimentary rock section, Tunisia. Polarized, LM. 3.4mm --- Image by © Dr. Bernardo Cesare/Visuals Unlimited/Corbis
17 Jul 2003 --- Gaylussite crystal section, LM, Polarized --- Image by © Carolina Biological/Visuals Unlimited/Corbis
23 Feb 2011 --- Fine-grained Schist thin section, Alps, Italy. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
09 Feb 2010 --- Thin section of Plagioclase twinning in Paragneiss, Alps, Italy. Polarized, LM. --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Thin section of deformed Quartz in Schist, Alps, Italy. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Thin section of an Agate from Brazil. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
12 Oct 2010 --- Thin section of Cordierite porphyroblasts in a pelitic hornfels from the southern contact aureole of the Adamello batholith, Italy. LM, Polarized --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
20 Nov 2010 --- Travertine is a form of limestone deposited by mineral springs, especially hot springs, Marion, Virginia, USA --- Image by © Gerald & Buff Corsi/Visuals Unlimited/Corbis
07 Dec 2008 --- Aerial view of abstract patterns seen in the dry Colorado River delta. --- Image by © Pete Mcbride/National Geographic Creative/Corbis
5.1.2
Amethyst crystals, a variety of Quartz, Brazil, South America.
Variscite.
Crocoite crystals, Australia
Apatite lilac-colored crystals in Pegmatite, Cornwall, England
Rhodochrosite crystals, Colorado, USA
Scolecite crystals, India.
Cylindrite, Bolivia.
Rhodochrosite (MnCO3), an ore of Manganese, Argentina, South America.
Stibnite crystals, the main ore of Antimony, China.
Fluorite crystals, China.
Wulfenite crystals, Arizona, USA.
Close-up of tarnished Silver.
01 Apr 2006 --- Malachite, Arizona, USA --- Image by © Scientifica/Corbis
Stibnite crystals, Antimony sulfide, an ore of Antimony.
12 Dec 2009 --- Malachite mineral; habitat: Mashamba, Shaba, Congo, Africa; size: 12 cm. --- Image by © Walter Geiersperger/Corbis
20 Mar 2009 --- Glass-rich Lava crystal section with phenocrysts of Plagioclase. Polarized LM. 1.7 mm --- Image by © Dr. Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Thin section of deformed Quartz in Schist, Alps, Italy. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Fine-grained Schist thin section, Alps, Italy. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Thin section of an Ocean Jasper pendant from Madagascar. It contains numerous orbicules or sperulites in a fine-grained silica matrix that resulted from the process of devitrification of a rhyolitic lava upon cooling. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
23 Feb 2011 --- Thin section of Sillimanite in Paragneiss, Alps, Italy. Polarized LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
26 Mar 2010 --- Thin section of a granulite from Antarctica. Intergrowths between crystals may be regular and characterized by abundant crystal faces or chaotic and full of strange shapes. In this image, the orange-brown biotite and the blue worm-like quartz grew simultaneously in a symplectic intergrowth that is believed to indicate low nucleation and growth rates in the replacement of a preexisting mineral during metamorphism. This metamorphic sample is unusual because it went to ultra-high-temperature of over 900 8C, very rarely recorded about 550 million years ago. During the slow cooling, the biotite-quartz intergrowth replaced a former crystal of garnet. Polarized, LM --- Image by © Bernardo Cesare/Visuals Unlimited/Corbis
27 Oct 2010 --- Selenite crystal, White Sands National Monument, near Alamagordo, New Mexico, USA --- Image by © Louise Murray/Visuals Unlimited/Corbis
07 Dec 2008 --- Aerial view of abstract patterns seen in the dry Colorado River delta. --- Image by © Pete Mcbride/National Geographic Creative/Corbis
07 Dec 2008 --- Aerial view of abstract patterns seen in the dry Colorado River delta. --- Image by © Pete Mcbride/National Geographic Creative/Corbis