- Greenschist (Wikipedia)
Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism, typically 300–450 °C (570–840 °F) and 2–10 kilobars (29,000–145,000 psi). Greenschists commonly have an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine. The platiness gives the rock schistosity (a tendency to split into layers). Other common minerals include quartz, orthoclase, talc, carbonate minerals and amphibole (actinolite).
- NGC 6025 (Wikipedia)
NGC 6025 (also known as Caldwell 95) is an open cluster located 2,700 light years away in the Triangulum Australe constellation. It was discovered by Abbe Lacaille in 1751 during his expedition to the Cape of Good Hope.
