Amphibolite Foliated Metamorphic Rock

Amphibolite is a foliated metamorphic rock. The orientation of the foliation is 251/75. It has a gneiss foliation and stripes of minerals segregation. Minerals such as white Quartz, shinny Plagioclase, green Amphibole, and pistachio green (yellowish) epidote were seen on the fresh surface. Greenschist is coarse grained metamorphic rock that contains minerals such as yellow epidote, flakes of mica and green serpentine and chlorite. Metasediments with various colors were seen such as Quartzite that has no foliation and contains a lot of hard minerals quartz.
E3.S2 Listvenite:
Listwenite are pale rock (very light brown), few bubbles were released when Hydrochloric acid was added.

4. Interpretation and Discussion:
VMS, Sediments and Slags
Vesicles in the slag are caused by degassing. Rinkle structure in the rock formed due to incomplete melting. Gossan lays on top of the ore deposits, this rock was formed when the reduced form of mineral sulphide vein move up from the bottom. As these minerals come in contact with air and water the rock begins to oxidize. …show more content…
At the temperature around 350 degree Celsius black smokers were formed. The color black are formed due to the presence of particles such as zinc sulfide, iron and copper solution of high temperature precipitation. Massive sulphides, manganese will precipitate far away where the temperature is quiet lower. Umber also indicates that there are hydrothermal vents somewhere close. (Frisch,et al,