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Geology A-Z

Guess these rocks, minerals, and other things about geology whose names start with each letter A-Z.
Only one word answers
Quiz by GeoRockstar14
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Last updated: July 10, 2023
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First submittedNovember 10, 2022
Times taken115
Average score50.0%
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Description
Answer
A
Commonest pyroxene mineral
Augite
B
Makes up more than 90% of all volcanic rocks
Basalt
C
Type of boundary where subduction occurs
Convergent
D
Hardest known mineral
Diamond
E
What the root word "geo" means in geology
Earth
F
Other name for dark silicates. Think Fe plus Mg
Ferromagnesium
G
What obsidian is made of
Glass
H
Mineral with a iconic, rust red streak
Hematite
I
Nonsilicates are divided by their negatively charged ______
Ions
J
"Dalmatian ______"
Jasper
K
Country in East Africa with a rift valley
Kenya
L
Rock that reacts with HCL (hydrochloric acid)
Limestone
M
Era after the Paleozoic
Mesozoic
 
Description
Answer
N
Silver, copper, and sulfur are examples of ____ element minerals
Native
O
Amber, coal, and chalk are these rocks
Organic
P
Country ranking in the top 10 leading producers of gold
Peru
Q
Citrine is a variety of this mineral
Quartz
R
Corundum's two gemstones: sapphire and _____
Ruby
S
One of three rock types
Sedimentary
T
Halite's distinctive feature
Taste
U
Mineral that contains a radioactive element used in Fat Man
Uraninite
V
Nyamuragira is a famous one of these
Volcano
W
Last name of the "continental drift" theorist
Wegener
X
Rock fragment trapped in another rock
Xenolith
Y
What the Earth has 4.5 billion of
Years
Z
Fake diamond
Zirconia
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