Glauconite - Wikipedia Glauconite is an iron potassium phyllosilicate (mica group) mineral of characteristic green color which is very friable [5] and has very low weathering resistance It crystallizes with a monoclinic geometry
Glauconite: Mineral information, data and localities. Named in 1828 by Christian Keferstein from the Greek "glaukos," blue-green, in allusion to its color; but the term "glauconie" was used earlier, in 1823, by Alexandre Brongniart, as a name for the English term "green sand" Both celadonite and glauconite were lumped with "Grünerde", the approximate German equivalent of green sand, by Dana (1844)
Glauconite | Clay Mineral, Marine Sediment, Greenish-Gray . . . glauconite, greenish ferric-iron silicate mineral with micaceous structure [ (K, Na) (Fe 3+,Al, Mg) 2 (Si, Al) 4 O 10 (ΟH) 2], characteristically formed on submarine elevations ranging in depth from 30 to 1,000 metres (100 to 3,300 feet) below sea level
Glauconite: A tricky, sticky mineral that’s challenging . . . Offshore wind developers are encountering an unexpected challenge on the East Coast seafloor: a crushable, green mineral called glauconite, sometimes precisely where they plan to install wind turbines
Glauconite - an overview | ScienceDirect Topics Glauconite is an authigenic mineral that forms through the transition of clay minerals in the sea or by direct precipitation from seawater It is commonly found in shallow marine environments and is characterized by its rounded shape, dark green color, and high potassium content
Glauconite in thin section - Geological Digressions Glauconite is a marine, authigenic mineral that precipitates at very shallow depths beneath the sediment-water interface This requires very low sedimentation rates, normal salinity and pH of the ambient seawater, and suboxic conditions where both Fe 3+ and Fe 2+ are thermodynamically stable
Glauconite Mineral Data From the Greek "glaucos" for the blue green color Comments: Green glauconite intermixed with quartz Location: Ightham, Kent, England Scale: See Photo Blue green, Green, Yellow green Micaceous - Platy texture with "flexible" plates Non-fluorescent