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 …
2023年10月19日 · A tricky, sticky mineral that’s challenging offshore wind developers. Glauconite’s behavior poses a “significant risk” to offshore wind projects — and could make it harder to minimize potential effects on the environment and fishing. by Anastasia E. Lennon October 19, 2023.
Glauconite - Sandatlas
Glauconite is a green-colored mineral. It is structurally similar to micas and is sometimes considered to be one of the mica minerals. Despite that it appears usually in rounded ill-formed platelets which are not at all similar to typical flakes of common micas like muscovite and biotite.
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 Mineral Data
General Glauconite Information. Chemical Formula: (K,Na) (Fe+++,Al,Mg)2 (Si,Al)4O10 (OH)2. Composition: Molecular Weight = 426.93 gm. Potassium 5.49 % K 6.62 % K 2 O. Sodium 0.27 % Na 0.36 % Na 2 O. Magnesium 2.28 % Mg 3.78 % MgO. Aluminum 1.90 % Al 3.58 % Al 2 O 3.
Glauconite – WGNHS – UW–Madison
Glauconite is considered diagnostic of sediments deposited in a continental shelf marine environment. It is suggestive of slow rates of sediment accumulation and may form by biogenetic or diagenetic alteration of minerals such as biotite or volcanic glass.
Glaucony authigenesis, maturity and alteration in the Weddell …
2019年9月19日 · Glauconite is the iron-potassium hydrous phyllosilicate mineral typical of the glaucony green marine clay facies, which also includes Fe-rich, 2:1 dioctahedral specimens with expandable layers of...
New insights into the nature of glauconite - GeoScienceWorld
2020年5月1日 · In addition, our new findings give insights into the glauconitization process and at the same time investigate the potassium-deficient character of the dioctahedral mica “glauconite.”
New insights into the nature of glauconite - De Gruyter
Glauconite must be assessed as mica-rich mica-smectite R3 interstratified mineral, with the pure end-member mica also having intrinsic K-deficient chemical characteristics (K + ~ 0.8 apfu).
Formation and Evolution of Glauconite. New Scale Approach - MDPI
The authigenic mineral glauconite can potentially provide absolute stratigraphic ages for sedimentary sequences and constraints on paleo-depositional conditions. This requires improved approaches for measuring and interpreting glauconite formation ages.
- 某些结果已被删除一些您可能无法访问的结果已被隐去。显示无法访问的结果