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What are rocks that have a glassy texture called?
Obsidian
What type of rock is black all the way through non magnetic and non flamable?
Basalt is on of the many rocks that is black, obsidian (a volcanic glass) is another.
Can a obsidian rock be found in Louisiana?
No, obsidian is also called 'volcanic glass,' since it is a product of cooled lava. Since there are no volcanoes in Louisiana there will not be any natural obsidian.
Does sandstone retain heat?
All rock retains heat. Darker rocks such as schist or obsidian are darker and as a result store heat and retain it more efficiently. Sandstone is often lighter and more reflective.
What is possible origin of obsidian?
Obsidian is volcanic glass, derived from the quick cooling of high silica lava.
How does one make a cutting tool with obsidian?
Making a cutting tool using obsidian rock is quite easy. The cavemen used to smack pieces of obsidian with other rocks until the obsidian was thin and sharp as a knife.
How did ancient people make weapons?
Ancient people used obsidian ( rocks used to make weapons)
Name 4 kinds of igneous rocks?
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
What does obsidian mean in rocks and minerals?
Obsidian is black glass formed by volcanoes.
Why do obsidian rocks look dark?
because an obsidian rock has low silica
What are rocks that have a glassy texture called?
Obsidian
What type of rocks are pumice obsidian and granite?
Igneous rocks
What is a glassy rock?
Glassy rocks are rocks that have cooled and solidified quickly, without forming crystals. This rapid cooling prevents mineral crystals from growing, resulting in a smooth and glass-like texture. Obsidian and pumice are examples of glassy rocks.
WHAT ARE obisdion rocks used for?
Obsidian rocks are commonly used in jewelry making, as they can be polished to a high shine. They are also used in surgical scalpels due to their sharp edges, as well as in archaeological tools for cutting and scraping. Additionally, obsidian is sometimes used in traditional medicine for its perceived metaphysical properties.
What did people used igneous rocks for?
The Native Americans used the Igneous rock Obsidian as arrowheads. Granite is used as countertops and sculptures.
What did the lucayans use as there weapons?
Obsidian blades and daggers as well as clubs with sharp rocks and shards of obsidian embedded in them. Arrows and darts sometimes tipped with poison were also used.
What did the mayans use as weapons?
Obsidian blades and daggers as well as clubs with sharp rocks and shards of obsidian embedded in them. Arrows and darts sometimes tipped with poison were also used.
