The parent rock of serpentine is called peridotite which is an ultramafic rock
The parent rock of serpentine is called peridotite which is an ultramafic rock
Serpentine has been used since ancient times, so there isn't a specific date for its discovery. It is a metamorphic rock that often contains the mineral chrysotile, a type of asbestos, which has been mined and used for various purposes for centuries.
In this scenario, the igneous rock intrusion is the youngest rock, as it formed after the metamorphic rock was already in existence. The metamorphic rock must have been present before the igneous rock intruded into it, making the metamorphic rock the oldest of the two. Thus, the metamorphic rock is the oldest in this context.
Jade is a metamorphic rock that forms when minerals such as tremolite, actinolite, or serpentine are subjected to high pressure and temperature conditions within the Earth's crust.
Aventurine is a metamorphic rock. It is a form of quartz that contains small inclusions of other minerals, giving it a distinct shimmering appearance.
serpentinite
slate which only contains the composition mica quartzite and marble as well
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.
A rock that is heavy and silky could potentially be anthracite, which is a type of coal known for its high density and smooth, shiny appearance. Another possibility could be serpentine, a metamorphic rock that can have a slick, smooth surface due to its high content of the mineral serpentine.
Marble is a metamorphic rock. It is a metamorphism of limestone or dolostone and contains calcite and dolomite.
Igneous rocks and most metamorphic rocks, of an igneous origin.
A metamorphic rock.