Named after Sigmund Zois, Baron von Edelstein (1747-1819), Austrian scholar who financed mineral-collecting expeditions. Left: Zircon oriented N-S. Zircon is usually colorless in thin section. Clinozoisite-Epidote thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope. Zoisite Ca2Al3(SiO4)(Si2O7)O(OH) °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Orthorhombic. Right: Monazite oriented N-S. Monazite can be very pale yellow-green in thin section. Zoisite thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope.

Lawsonite is a sorosilicate mineral with formula CaAl 2 … Plane-polarized light, field widths are 0.3 mm. This grain has developed a light-brown radiation halo in the adjacent garnet. Point Group: 2=m 2=m 2=m: Crystals prismatic, to 10 cm, typically deeply striated k [010] and poorly terminated; columnar to compact, massive. Lawsonite - CaAl 2 Si 2 O 7 (OH) 2 *(H 2 O) Named in 1895 in honor of geologist Andrew Cowper Lawson geologist with the Canadian Geological Survey and for most of his career a professor of geology and mineralogy at the University of California. Zoisite - Ca 2 Al 3 (SiO 4)(Si 2 O 7)O(OH) Zoisite, first known as saualpite, after its type locality, isa sorosilicate belonging to the epidote group of minerals. 23 - UCLA - Petrography Thin-Sections 24 - University of Colorado - Mineral Structure Data 25 - WWW-MINCRYST. This optical mineralogy/petrography video is part of the "video atlas of minerals in thin section" library at https://www.rockptx.com. We would like to show you a description here but the site won’t allow us. Clinozoisite-Epidote thin section photomicrographs are taken in plane-polarized light and cross-polarized light, and can easily be recognized under the microscope.