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Question:
Quartz mineral
Answer:
ONYX
Length:
4
Similar Crossword Questions:
Mineral slightly harder than quartz
Mineral in the form of quartz or flint
Mineral in quartz
Resort known for its mineral waters
Quartz used in jewelry
Mineral-rich area of Europe
Crystalline mineral
Coal or quartz
Mineral called halotrichite
Healthful mineral
Mineral in transparent sheets
Red varieties of quartz
French chalk mineral
Hemoglobin mineral
Mineral sources
Mineral name ending
Deep-blue mineral
___ ammoniac (mineral found around volcanic vents)
Chalky mineral
Mineral made into jewelry
It's less dense than quartz
Mineral used in glassmaking
Green gem mineral
Inventor of a mineral hardness scale
Surface mineral deposits