Chrysacolla (Cu3Al)2H2Si2O5(OH)4.nH2O is a ornamental gemstone with a hardness of 2.0 to 2.6 when dull, and near 7.0 when silica is present. Its not a true rock but a mixture of minerals of copper like malachite, some quartz, some turquoise and bits of brown matrix. When mixed with Malachite (Copper Carbonite) it was known as Eilat stone in the Gulf of Aqaba at Eilat. It is a often seen as light blue, blue to greenish blue. With silica (Quartz) when polished it tend to feel slightly greasy and has a vitreous luster. There is no cleavage but it does display a conchoidal fracture when chipped or broken. Its name comes from the Greek words meaning "Gold" and "Glue" It was a name of a material used in soldering gold. The nameis often applied now to borax, which is so employed. It is often found in the upper veins (oxidized zones) of copper mines. Today it is used for paper weights, ring stones and ornamental spheres. When found blue and covered with thin crystals of quartz it is much in demand as a decorative mineral specimen.
River rock is typically a type of sedimentary rock formed through the deposition and compression of sediments over time.
Plymouth Rock is an igneous rock, specifically a glacial erratic. It is made of a type of granite called Dedham Granite.
It can be any type of rock. If heat and pressure deep in the Earth changed it, it is a metamorphic rock. If sediments of sand or other rocks compacted/cemented together, it's a sedimentary rock. If magma from a volcano cools, (on the outside of a volcano) it's an igneous rock.
Sedimentary rock
Exfoliated domes are typically made out of granite, a type of igneous rock. This rock type is resilient and can withstand the process of exfoliation, which involves the outer layers of the rock peeling away due to pressure release.
The rock cycle is how one type of rock can be changed into another type of rock.
this mt. has a rock type of rock
Rock
granite is a type of igneous rock.
The type of rock that can be foliated and/or non-foliated is the Igneous rock.
All rock types can be formed from any other rock type.
Magma IS made of melted rock and minerals. Not what type of rock. All types of rock.
Igneus is a type of rock. Metamorphic, too. Sedimentary.
the type of rock made mostly from clay is the shale rock
The type of rock that contains lava or magma is an igneous rock.
It is called the Rock Cycle.
ORGANIC SEDIMENTARY ROCK`s : Is a type of sedimentary rock because sedimentary rock has three types of sedimentary rock called clastic , chemical , and organic sedimentary rock so yes ORGANIC SEDIMENTARY ROCK is a type of sedimentary rock..........................................