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Gemmy Serpentine: A Southwest Oregon Field Guide
This video is a field guide to finding quality serpentine in Southwest Oregon.
I show you what to look for and the key characteristics of the good stuff.
Additional Information:
The serpentine group consists of a family of minerals known for their similar physical properties and chemical compositions, primarily constituted of hydrated magnesium silicates. These minerals are often categorized into three main types based on their structure: antigorite, chrysotile, and lizardite, which are the most common and well-known members of the serpentine group.
Antigorite - often represents the serpentine group in metamorphic rocks.
Chrysotile - fibrous serpentine, widely used historically for its asbestos content.
Lizardite - the most common form of serpentine in a wide variety of settings.
Beyond these, the classification and inclusion of specific minerals as distinct species within the serpentine group can vary, with some references focusing on these three as the primary constituents due to their prevalence and significance. The serpentine group's complexity arises from its polytypism and polymorphism, with various forms exhibiting different structural and physical characteristics despite having a similar chemical composition.
Gemmy Serpentine: A Southwest Oregon Field Guide