|
Amethyst is created from quartz, usually from alternate shifts of right and left handed lamellae. Lamellae is a geological term used to denote shifts in the earths crust. Amethyst is usually found crystallized and may have what is called thumb markings |
|
Tiger's Eye forms when Quartz forms over existing bluish-gray Crocidolite, and eventually entirely replaces it |
|
Quartz can be formed from silicia which collects in the earth it froms when silicon and oxygen combines it creates silicon dioxide. |
|
Fools Gold also known as Pyrite froms At a high and low temperatures and occurs usally in small quanntites in igneous metamorphic and sedimentary rocks worldwide. |
|
The way that emeralds form is they may form in hydrothermal veins if the necssary condtions are present the hydrothermal veins occur when hydrothermal fluids escape from magma deep in the earth's crust .
|