Description
My Instagram: FreakenFru ( Dmitrii Danilov ) NO HAVE OIL in MY CABS! ONLY POLISH! I have 17+years(2022) in my professional experiense in my Field! Unique, rare, super beautiful, bright, high flash A unique mineral is Phlogopite ! Kola peninsula, the city of Kovdor, Russia Tetraferriphlogopite Mica "Golden Fish" i make all cabochons myself if you have any questions, ask me Best regards, Dmitrii Danilov - Size: 27.113.23.2 mm - Weight: 1.69 grams - Origin: Kola peninsula, the city of Kovdor, Russia I am SURE you will make Superb Jewelry with this stone! collectible specimen Mica containing Manganese, giving a reddish shade. The entire surface of iridescent. When exposed to light, mica, absorbs it. All minerals, cut, I make & polish independently. Phlogopite cabochon, perfect for silver, gold, wire wrapping, leather or beading jewelry. Flat back. Mirror & High quality polishing. This is high quality hand - polished Phlogopite piece. This phlogopite gemstone also could be a central stone in a powerfull wire wrapped, silver, gold, leather or beading jewelry & amulet. Combined shipping is available on multiple purchases & occurs automatically. Edges under the polished, neat chamfer on the underside, back side glossy. Phlogopite is a yellow, greenish, or reddish-brown member of the mica family of phyllosilicates. It is also known as magnesium mica. Phlogopite is the magnesium endmember of the biotite solid solution series, with the chemical formula KMg3AlSi3O10(F,OH)2. Iron substitutes for magnesium in variable amounts leading to the more common biotite with higher iron content. For physical & optical identification, it shares most of the characteristic properties of biotite. Paragenesis Phlogopite is an important & relatively common end-member composition of biotite. 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 & in marble formed from impure dolomite (dolomite with some siliclastic sediment). The occurrence of phlogopite mica within igneous rocks is difficult to constrain precisely because the primary control is rock composition as expected, but phlogopite is also controlled by conditions of crystallisation such as temperature, pressure, & vapor content of the igneous rock. Several igneous associations are noted: high-alumina basalts, ultrapotassic igneous rocks, & ultramafic rocks. Basaltic association The basaltic occurrence of phlogopite is in association with picrite basalts & high-alumina basalts. Phlogopite is stable in basaltic compositions at high pressures & is often present as partially resorbed phenocrysts or an accessory phase in basalts generated at depth. Ultrapotassic association Phlogopite mica is a commonly known phenocryst & groundmass phase within ultrapotassic igneous rocks such as lamprophyre, kimberlite, lamproite, & other deeply sourced ultramafic or high-magnesian melts. in this association phlogopite can
