The metal is found in the Earth's crust in the pure, free elemental form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold: while it is more abundant than gold, it is much less abundant as a native metal.
Where are Sanibel Island and Captiva Island? Sanibel Island & Captiva Island are located off the coast of southwest Florida, just west of Fort Myers, Florida. Fort Myers is situated between Naples, FL and Tampa, Fl. The Fort Myers Airport, Southwest Florida International Airport (RSW airport code), is located approximately 20 miles away from Sanibel Island.
Area Guide. Take a trip to the mainland, or another nearby island. Sanibel is not the only beautiful place in the area, and for adventure seekers, nature lovers or history buffs, there are plenty of other off-island attractions and activities to enjoy!verything is only minutes away from the Sanibel Causeway Bridge. Each attraction makes for a sensational day trip and adds to the variety of options available when planning your vacation.