View allAll Photos Tagged Geode
A geode – plain on the outside but pretty on the inside.
The Macro Mondays group has chosen Stone today.
This amazing ametyst geode weighs 700kg and was discovered in 1991 in Rio Grande do Sul, southern Brazil.
On display at Redlands Yard, Broadwindsor.
A quick peep inside a geode --
Geodes are spherical to subspherical rock structures with an internal cavity lined with mineral materials. They have a durable outer wall that is more resistant to weathering than the surrounding bedrock. This allows the geode to survive intact when the surrounding bedrock weathers away. The mineral lining the cavity is often a scintillating druse of tiny quartz crystals underlain by multiple bands of translucent gray and white agate. Many are lined with more spectacular treasures.
Rich purple amethyst, perfect white calcite crystals, and colorful banded agate are other common linings. Rare geodes can be filled with beautiful blue gem silica, pink rhodochrosite, spectacular opal with vivid play-of-color or other rare materials. Geodes range in size from under one centimeter to several meters in length. From the outside most geodes look like common rocks, but when they are opened the sight can be breathtaking.
The Geode cinema within Parc de la Villette - one of the largest movie screens in the world within unique reflective architecture.
La Géode is a mirror-finished geodesic dome that holds an Omnimax theatre in Parc de la Villette at the City of Science and Industry.
City of Science, largest science museum in Europe.
La Géode (IMAX theater, Hemispheral screen of 1000 square meters, 4K movies, 400 seats).
This quartz, var. chalcedony, "geode" was found along a small drainage off of the North Fork of the Shoshone River in the Absaroka Mountains west of Cody, Wyoming. The specimen was backlit with a small flashlight.
Chalcedony is a cryptocrystalline (microscopic to submicroscopic) variety of quartz. Most chalcedony contains small amounts (1%-20%) of the silica mineral Mogánite which has the same chemical formula as quartz (SiO₂) with some water and a different crystalline structure. With time the mogánite slowly converts into quartz. This conversion process results in mogánite-free chalcedony.
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For Macro Mondays: Jagged
A lot of jagged edges in this small geode crystal...It measures exactly 2" (side to side).
Amethyst Geode. The Amethyst is the purple variety and most valuable of the Quartz.
This design was complicated due to that organic shape so the inner is complex and intricate.
It can be changed to red or green crystal.
besides collecting cats, I like to collect rocks. don't know anything about them just that I like them.
a small piece of Geodo jewellery
#Macromondays #Redux19
Meyer-Optik Gorlitz 50mm F 1:8 Oreston (+ 35mm extension tube)
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Le projet du Parc de la Villette prévoyait des activités diverses : culturelles, pédagogiques, sportives, de loisirs, sur un site de 55 hectares. La réalisation architecturale du parc a été confiée en 1983 à Bernard Tschumi architecte français d’origine suisse, suite au concours international. Au lieu d’ajouter un nouveau bâtiment, Bernard Tschumi décida de construire 26 lieux disséminés à travers tout le site, “Les Folies“ [...]
Les vingt-six Folies du Parc de la Villette, réparties tous les 120 mètres, dessinent une grille éclatée sur l’ensemble du site. Certaines ont une fonction (restaurant, café, poste de secours, ateliers…), d’autres pas. Toutes conçues sur le principe de déclinaison d’un cube rouge de 10,8 mètres de côté, elles sont plus ou moins ajourées, et laissent apparaître une structure de 27 cubes plus petits, de 3,6 mètres de côté.