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What gives the gem amethyst its purplish color? A. Quartz B. Iron C. Oxygen D. Titanium User: Please choose the answer that describes the scientific notation for 3,134,000,000. A. 3.13445 B. 31.349 C. 3.1346 D. 3.1349
Weegy: What is the question? User: What type of map is best suited for maritime navigation? A. Mercator projection B. Conic projection C. Topographic D. Geologic Weegy: What type of map is best suited for maritime navigation? D. Geologic User: Which of the following is an example of a homogeneous mixture? A. Sand B. Zinc C. Bronze D. Copper (More)
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Expert Answered
Updated 7/4/2013 4:41:14 PM
4 Answers/Comments
The gem amethyst, which is a form of quartz, gets its purplish color from B. IRON. Color centers in the quartz are created when trace amounts of iron are irradiated (from the natural radiation in the rocks).
Added 7/4/2013 4:31:04 PM
The type of map best suited for maritime navigation is A. Mercator projection.
Added 7/4/2013 4:36:50 PM
C. BRONZE is an example of a homogeneous mixture.
Added 7/4/2013 4:38:09 PM
mpaul123, please always research your answers and provide a link to a reliable source which confirms your answer.
Please review the basic rules:

Added 7/4/2013 4:41:14 PM
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