Minerals & Gemstone 480x104
Minerals & Gemstone 480x104
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Glossary of Terms
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ALL



Base
1) The top and the bottom "closing points" of a crystal. See alsobasal pinacoid.

2) The matrix or mother rock that a crystal is resting on.

3) A chemical substance that is either a hydroxide, carbonate, or metal oxide that has the ability to turn litmus paper blue, and has the ability to react with acids to form salts. Bases are alkaline and have a bitter taste.




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