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The following is a list of rock types recognized by geologists. There is no agreed number of specific types of rock. Any unique combination of chemical composition, mineralogy, grain size, texture, or other distinguishing characteristics can describe a rock type. Additionally, different classification systems exist for each major type of rock. [1]
A rock formation is an isolated, scenic, or spectacular surface rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term rock formation can also refer to specific sedimentary strata or other rock unit in stratigraphic and petrologic studies.
Mokey Fraggle (performed by Kathryn Mullen in the original series, Donna Kimball in Fraggle Rock: Rock On! and Fraggle Rock: Back to the Rock, voiced by Mona Marshall in the animated series) is a highly spiritual and artistic hippie-type Fraggle who usually remains quiet and contemplative, though even she can get annoyed from time to time.
Breccia Moon rock containing an Earth-origin meteorite collected by Apollo 14 astronauts. The meteorite is the oldest known rock originating from Earth, being approximately 4 billion years old. Big Muley: Lunar Sample Laboratory Facility, Houston, Texas, United States: Anorthosite Moon rock collected by Apollo 16 astronauts. It is approximately ...
The proportion of silica in rocks and minerals is a major factor in determining their names and properties. [7] Rock outcrop along a mountain creek near Orosí, Costa Rica. Rocks are classified according to characteristics such as mineral and chemical composition, permeability, texture of the constituent particles, and particle size.
This is a list of minerals which have Wikipedia articles. ... Anyolite (metamorphic rock - zoisite, ruby, and hornblende) Aquamarine (light blue variety of beryl)
West Virginia joined Kentucky and Utah, which also recognize coal as a state mineral or rock. The drive to name coal as an official state symbol was initiated by a high school student from Wharncliffe, West Virginia, who initiated her project at a school fair and collected 2,500 signatures on a petition that was submitted to legislators. [85]
This is an alphabetical list of mainstream rock performers spanning all subgenres and fusions within the genre of rock music.Artists included are known for creating material predominantly within a style of rock music (Rockabilly, Rock & Roll, Heavy Metal, Punk Rock, Alternative Rock, Classic Rock, Modern Rock, Indie Rock, etc.); have enjoyed considerable success on singles or album charts ...