Durango Volcanic Field
Durango volcanic field is a volcanic field in north-central Mexico (Durango), east of the Sierra Madre Occidental. The field covers a surface area of . The volcanic field is located in the Tepehuano terrane. Volcanism in the area was accompanied by tectonic extension. There are around hundred cones in the field. Some volcanic rocks have been affected by faulting; buried faults are also found. The San Luis-Tepehuanes fault system is associated with the field. The whole field is covered by lavas, which are about thick and reach a total volume of . Magma ascent has been controlled by northwest-trending faults. Volcanism in the wider territory was related to the subduction of the Farallon plate until 29 mya. Later tectonic changes caused a start of more alkaline volcanism. The volcanoes have erupted basanite. The main components of the rocks at La Breña-El Jagüey are clinopyroxene, ilmenite, olivine, plagioclase and titanomagnetite, with rocks sporting variable textures. The par ...
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Titanomagnetite
Titanomagnetite is a mineral containing oxides of titanium and iron, with the formula Fe2+(Fe3+,Ti)2O4. It is also known as titaniferous magnetite, mogensenite, Ti-magnetite, or titanian magnetite. It is part of the spinel group of minerals. The Curie temperature In physics and materials science, the Curie temperature (''T''C), or Curie point, is the temperature above which certain materials lose their permanent magnetic properties, which can (in most cases) be replaced by induced magnetism. The Cu ... for titanomagnetite has been found to have a wide range of 200 to 580°C. It is can be found in association with zircon, fluorapatite, ferro-ferri-katophrite, ulvöspinel, nepheline, chalcopyrite, phyrrotite, pyrite, natrolite, and chevkinite-(Ce). References Minerals Spinel group {{mineral-stub ...
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