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.
Soapstone is a metamorphic rock. It is formed through the metamorphism of ultramafic rocks, such as peridotite or serpentinite. This process involves high heat and pressure, which causes the minerals in the rock to recrystallize, resulting in the formation of soapstone.
Serpentine is itself a category of Minerals. Minerals are not Rocks in that Minerals are homogenous (one substance) whereas Rocks are heterogenous (many substances). All Rocks contain Minerals in a fixed proportion. Serpentinite is a Metamorphic Rock made of Serpentine-Group Minerals pressed together at the bottom of the sea-floor and heated by magma. In order to be an Igneous Rock, a Rock has to itself be a form of crystallized magma, not merely heated by magma.
well It Is hard because all rocks are hard
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.
•Serpentinization accompanied by: -Redox and H2 generation -Volumetric change •3.3 g/cm3 •2.7 g/cm3 -Heat generation
serpentinite
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!
Serpentinite is one of the "green" rocks of the Pacific northwest.
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
Paul K Ase has written: 'Chemical stabilizers for the control of fugitive asbestos emissions from open sources' -- subject(s): Asbestos, Serpentinite
Daniel L. Wilson has written: 'The origin of serpentinites associated with the Shuksan metamorphic suite near Gee Point, Washington' -- subject(s): Crystalline Rocks, Geology, Rocks, Crystalline, Rocks, Ultrabasic, Serpentinite, Ultrabasic Rocks
Some examples of foliated rocks include slate, phyllite, schist, and gneiss. Amphibolite can be either foliated or nonfoliated. Examples of nonfoliated rocks include anthracite coal, hornfels, serpentinite, soapstone, quartzite, marble, and metaconglomerate.