Fun with Geoscience Trivia

1. What three-letter word is used for a cavity often containing crystals or a mineral lining of different composition to the surrounding rock?
       VUG


2. Perthite is a variety of what common rock forming mineral?
       FELDSPAR


3. What calcium silicate mineral is commonly found in contact with metamorphosed limestone and can display fibrous crystal forms?
       WOLLASTONITE
    

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