Is obsidian a mineral? - Answers
Jun 8, 2024 · Obsidian is not a mineral. It is an igneous rock. yes all kinds. No. Obsidian is not crystalline so is not a mineral. It forms from the extremely rapid cooling of lava which means that crystals do ...
Why are mineral crystals in obsidian too small to see without a ...
Jun 14, 2024 · As a result, the mineral crystals are too small to be seen with the naked eye. The rapid cooling process hinders the growth of crystals, resulting in a smooth and glassy texture. The crystal size ...
Why does obsidian rock contain no crystals? - Answers
Jun 16, 2024 · Obsidian is a type of volcanic glass that lacks a crystalline structure, so it does not contain mineral grains. It forms from quickly cooling lava rich in silica, resulting in a smooth, glassy ...
Why does obsidian contain few or no mineral grains? - Answers
Jun 21, 2024 · Obsidian is a volcanic glass. Obsidian forms when lava cools very quickly, preventing mineral grains from forming. The rapid cooling prevents atoms from arranging into a crystalline structure ...
Does obsidian a glassy rock have a large grain size or a ... - Answers
Jun 12, 2024 · Best Answer. Actually, obsidian doesn't have grains at all. Technically obsidian is a glass, which means it has no internal structure. When geologists refer the the grain size of a rock, they mean ...
Why is the texture of obsidian is best contain few or no ... - Answers
Aug 30, 2023 · Obsidian cools so quickly the mineral grains do not have time to form. Wiki User. ∙ 13y ago. This answer is:
Why is mercury not considered a mineral? - Answers
Jun 17, 2024 · AnswerBot. ∙ 4mo ago. Mercury is not considered a mineral because it is a liquid at room temperature, which does not fit the definition of a mineral as being a naturally occurring solid with a ...
Which rock has large mineral grains granite obsidian basalt
AnswerBot. ∙ 4mo ago. Granite has large mineral grains compared to obsidian, basalt, and pumice. Granite is an intrusive igneous rock that forms deep within the Earth's crust, allowing for the ...
What mineral does magma turn into when it cools? - Answers
Jun 13, 2024 · Minerals common in igneous rock are potassium feldspar, plagioclase feldspar, muscovite and biotite mica, quartz, hornblende, olivine, and magnetite. Magma can cool and solidify into various ...
Mineral that will fizz with vinegar? - Answers
The mineral that will fizz in contact with hydrochloric acid is calcite, which is a form of calcium carbonate. The fizzing occurs due to the reaction between the acid and the carbonate in the ...