none is really sure
There are no known kimberlite or lamproite volcanic pipes in California. There are many serpentinite bodies present, but these are generally not volcanic pipes and are not of deep seated origin.
The protolith of soapstone is usually ultramafic rocks such as serpentinite or peridotite. These rocks undergo metamorphism due to high heat and pressure, resulting in the formation of soapstone.
Lands End in San Francisco is primarily made up of Franciscan formation rocks, which include chert, sandstone, and serpentinite. These rocks have been tightly folded and faulted due to tectonic forces, creating the rugged and scenic landscape at Lands End.
well It Is hard because all rocks are hard
none is really sure
serpentinite
Serpentinite is a metamorphic rock that forms when peridotite, a type of ultramafic rock, comes into contact with water and undergoes a chemical reaction. It is characterized by its green color and often has a shiny appearance due to the presence of serpentine minerals. Serpentinite is commonly found in areas where tectonic plates collide, such as subduction zones.
Serpentinite can contain the mineral Chrysotile, also known as white asbestos. Asbestos is carcinogenic (cancer causing) and can also if inhaled cause serious lung problems and is best avoided!
There are no known kimberlite or lamproite volcanic pipes in California. There are many serpentinite bodies present, but these are generally not volcanic pipes and are not of deep seated origin.
Serpentinite is a rock composed of serpentine minerals.I am going to drive a serpentine road tomorrow.
M. Kamal Akaad has written: 'On the behaviour of serpentinites and its implications' -- subject(s): Serpentinite
Volker Dietrich has written: 'Die sulfididschen Vererzungen in den Oberhalbsteiner Serpentiniten' -- subject(s): Petrology, Serpentinite, Sulphides
The protolith of soapstone is usually ultramafic rocks such as serpentinite or peridotite. These rocks undergo metamorphism due to high heat and pressure, resulting in the formation of soapstone.
Paul K Ase has written: 'Chemical stabilizers for the control of fugitive asbestos emissions from open sources' -- subject(s): Asbestos, Serpentinite
Syenite - Wikipedia, the free encyclopediaSyenite is a coarse-grained intrusive igneous rockof the same general composition as granite but with the quartz either absent or present in relatively small amounts (
Talc is a mineral and is not classified as metamorphic, sedimentary, or igneous as are rocks.