This Upper Greensand, as it is termed, represents sandier deposits, formed in rather shallow water lying in a broad belt off the western coastline. It was caused by another rise in sea level, which flooded the region to the east.

If you’d rather not use a product made from animals, try rock phosphate for similar results. Greensand or sandstone raises potassium without affecting the soil’s pH level.

Greensand forms in anoxic marine environments that are rich in organic detritus and low in sedimentary input. Having accumulated in marine environments, greensands can be fossil-rich, such as in the late-Cretaceous deposits of New Jersey.

Greensand (glauconite) is a mineral mined in New Jersey. It’s rich in potassium and also contains magnesium, iron and silica. Potassium does not move through the soil as does nitrogen so does not leach out of the soil and needs biological activity to activate it. Azomite is also a mined mineral (Utah).

Glauconite forms under reducing conditions in sediments and such deposits are commonly found in nearshore sands, open oceans and the Mediterranean Sea. Glauconite remains absent in fresh-water lakes, but is noted in shelf sediments of the western Black Sea.

Glauconite forms by three principal processes: alteration of the fecal pellets of bottom-dwelling organisms; modification of particles of illitic and biotitic clays by seawater; and direct precipitation from seawater. Particles of glauconite are generally sand-sized or finer.

Phlogopite micas are found primarily in igneous rocks, although it is also common in contact metamorphic aureoles of intrusive igneous rocks with magnesian country rocks and in marble formed from impure dolomite (dolomite with some siliclastic sediment).

Glauconite is an authigenic mineral in the clay/mica family, with potassium in interlayers and with iron in octahedral layers.

: a mineral consisting of a dull green earthy iron potassium silicate occurring in greensand.

9 Common Green Rocks and Minerals

• Chlorite. This rock contains a large percentage of chlorite, exhibiting its typical green color.
• Actinolite. Bladed sprays of dark green actinolite are visible in this specimen.
• Epidote. Gemmy olive green crystals of epidote.
• Glauconite.
• Jade (Jadeite/Nephrite)
• Olivine.
• Prehnite.
• Serpentine.

Mica is common in igneous and metamorphic rock and is occasionally found as small flakes in sedimentary rock. It is particularly prominent in many granites, pegmatites, and schists, and “books” (large individual crystals) of mica several feet across have been found in some pegmatites.

Muscovite is pearlescent, which means it can add additional shine to certain paints, ceramic glazes and even cosmetics. Scrap, flaked and ground muscovite is also commonly used as fillers and extenders in products like paints, surface treatments and manufactured products.

Muscovite typically occurs in metamorphic rocks, particularly gneisses and schists, where it forms crystals and plates. It also occurs in granites, in fine-grained sediments, and in some highly siliceous rocks. Large crystals of muscovite are often found in veins and pegmatites.

Muscovite can form during the regional metamorphism of argillaceous rocks. The heat and pressure of metamorphism transforms clay minerals into tiny grains of mica which enlarge as metamorphism progresses.

is that muscovite is (mineralogy) a pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula k]]al2(si3al)o10(oh,[[fluorine|f)2; used as an electrical insulator etc while mica is any of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage.

Mica powder in the plastics can be used to strengthen, stiffening and reduce wrinkling of the materials; reducing the thermal expansion and conductivity, improving the insulating properties and vibration damping and to increase adhesion to the substrate.