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Obsidian is a glassy black

Obsidian is a glassy black igneous rock. A sample of obsidian is shown. Which type of rock forms in a similar manner as obsidian
1. 1 answer
2. 121 views
Obsidian is a glassy black igneous rock. A sample of obsidian is shown. Which type of rock forms in a similar manner as obsidian
1. 1 answer
2. 137 views
Obsidian is a glassy black igneous rock. A sample of obsidian is shown. Which type of rock forms in a similar manner as obsidian
1. 1 answer
2. 115 views
Obsidian is a glassy black igneous rock. A sample of obsidian is shown. Which type of rock forms in a similar manner as obsidian
1. 1 answer
2. 82 views
Obsidian is a glassy black igneous rock. A sample of obsidian is shown.Which type of rock forms in a similar manner as obsidian
1. 1 answer
2. 94 views
How would you best describe the texture of an igneous rock that formed extremely slowly underground?Responses glassy glassy dull
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2. asked by abigail
3. 167 views
An unknown mineral specimen is not scratched by a penny and does not exhibit cleavage. The mineral is most likely to be:obsidian
1. 5 answers
2. asked by delilah:)
3. 7,200 views
Imagine an archeologist said they found an “osseous knife” used by ancient humans. What would you expect the knife to be
1. 23 answers
2. asked by moo
3. 132 views
Obsidian volcanic lava cools quickly .Granite magma cool slowly underground . Quartzite quartz sand put under intense heat and
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2. asked by Dino cat
3. 73 views
Vitreous. Which option is bestGlass Looks like amber not quite glassy
1. 1 answer
2. 40 views