Important Nonsilicate Minerals

October 15, 2020 admin 0

List the common nonsilicate minerals and explain why each is important. Nonsilicate minerals are typically divided into groups, based on the negatively charged ion or […]


Contact, or Thermal, Metamorphism

October 1, 2020 admin 0

Contact metamorphism, or thermal metamorphism, occurs in Earth’s upper crust (low pressure), when rocks immediately surrounding a molten igneous body are “baked” (high temperature). Because […]