Asked by: Elm Warnekingasked in category: General Last Updated: 29th June, 2020
Why is obsidian not a mineral quizlet?
Then, why is obsidian not considered a mineral?
Obsidian is mineral-like, but not a true mineral because as a glass it is not crystalline; in addition, its composition is too complex to comprise a single mineral. It is sometimes classified as a mineraloid. Crystalline rocks with obsidian's composition include granite and rhyolite.
Furthermore, what is not true about minerals? Solid: Liquids and gases are not considered minerals, in large part because their structure is constantly changing, which means they do not have a characteristic crystal structure. A true mineral must be solid.
Also know, why Glass is not considered a mineral quizlet?
This orderly packing of atoms is seen and shaped as what many know today as crystals. Some naturally occurring solids, such as volcanic glass (obsidian) lack a repetitive atomic structure and are not considered minerals. the common mineral quartz consist of Silicon (Si) and Oxygen (O) atoms in a ratio of one - to -two.
Why is natural glass not considered to be a mineral?
Natural glass (obsidian) is a volcanic rock, but it is not a 'mineral' because glass is not crystalline: it is a supercooled liquid: no crystals had time to form. Man made glass is not a mineral because it is man- made (not naturally occurring) and also - it is not crystalline.