Ruffy quarry, Bellegarde-en-Forez, Saint-Galmier, Loire, Auvergne-Rhône-Alpes, France
|Latitude & Longitude (WGS84):||45° 39' 8'' North , 4° 18' 55'' East|
|Latitude & Longitude (decimal):||45.65222,4.31528|
|Köppen climate type:||Cfb : Temperate oceanic climate|
|Name(s) in local language(s):||Carrière de Ruffy|
|Other/historical region names associated with this locality:||Rhône-Alpes|
This is the biggest quarry in the Loire Department, in operation since the 19th century. The company "Carrières de la Loire Delage SA" digs into metabasalts, metagabbros and leptynites (devonian) cut by several large microgranite veins (upper carboniferous) to make road and railway gravels. Because of these granitic intrusions, many quartz and calcite veins are visible in the quarry. Some vugs in these veins may contain nice (and sometimes big) calcite crystals.
Note: Due to security reasons, public access is strictly forbidden to this quarry!
10 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
23.03 - 33.9 Ma
541 - 1000 Ma
|Neoproterozoic crystalline metamorphic rocks|
Age: Neoproterozoic (541 - 1000 Ma)
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.