Mi(ni)Geo |
Enlaces a fotos, recursos y blogs sobre geociencias y otros temas afines (y no tan afines). Miguel Vera, autor de MiGeo |
Gold ore (Callion/Australia). Native gold in association with colloform goethite indicates contemporaneous precipitation. Width of micro-photo corresponds to approx. 250 microns. (via Geneva Ore Deposits Group)
(Source: juanmiguelbeer)
Specular Haematite (by Hypocentre)
One mineral in the shape of another. Here we have a cubic mineral form with a metallic lustre. The clue here is in the foreground where a thin coating of specular haematite has been broken off from an underlying yellow fluorspar crystal. Sample from Egremont, Cumbria, close to the Florence Mine.
Most volcanic activity happens not on land, but kilometres down in the deep ocean. Geological research has revealed that underwater volcanoes, or hydrothermal vents, are rich in metals like copper, zinc, silver and gold at concentrations that make them commercially attractive to miners. But, they are also colonised by exotic life-forms and scientists believe the vents may have been the location where life originated. Mark Horstman takes a look at a mining project that is set to commence operations in the deep waters off Papua New Guinea. (via Catalyst)
Blenda y Ankerita, Mina Regia Bellmunt del Priorat, Tarragona, España. (via Mis imágenes de minerales)
Copper. Albany & Boston Mine, Michingan. (via Yale Digital Commons)
Geotag foto preis 31. Oman (2009): Biblische Plage? Nein! Restloch-See verunreinigt durch Bergbau. (c) Anna R., RWTH Aachen. (via Fotopreis Geotag 2011 - Structural Geology, Tectonics and Geomechanics - RWTH Aachen)
El Cerro del Hierro, en la Sierra Norte sevillana, se encuentra entre los términos municipales de San Nicolás del Puerto y Constantina. Se trata de un paleokarst que ha quedado expuesto tras la explotación de las limonitas y demás óxidos de hierro presentes entre las calizas. Foto: Gonzalo García, 2004. (via MTI Blog)
Prominent Hill mine, South Australia (by magisstra)
La mancha carbonífera de esta localidad conquense es, en realidad, un pequeño yacimiento de hulla en el que se pusieron grandes expectativas a finales del siglo XIX y comienzos del XX, sin que jamás llegaran a alcanzarse los objetivos previstos dada la escasa potencia de las capas. Las minas de Henarejos comenzaron a ser explotadas a mediados del siglo XIX, finalizando su vida útil en 1966, aunque sobre los años 90 sus escombreras fueron nuevamente trabajadas. (via Hastial 1, 2011: Nueva contribución : MTI Blog)
Hematite And Rutile In Quartz.. (by Sea Moon)
Orpiment Macro (with Calcite) by cobalt123 on Flickr
Heading off to the Lake District for a week in a bit. It’s supposed to be a holiday with my parents, but I made the fatal mistake of letting slip...
Molybdenite (Taken with instagram)
Corundum var. Ruby
near Upland, Cascade Canyon, CaliforniaTwice a month our Gallery sponsors a free, guided monthly,...
1999 Debris Flows at Arapahoe Basin ski area, CO
Read:http://landslides.usgs.gov/recent/archives/1999georgetown.php
Axel Sigurðarson shot these beautiful photos from above his native Iceland. You can see more of them here.