Garmin 6 Pin Transom Mount Transducer with Depth and Temp. The Garmin Transom Mount Dual Frequency 50/200khz Transducer provides accurate depth and temp readings to your GSD 20/21/22, Garmin Chartplotter/Sounder or Garmin Fishfinder.
Bloodstone is a silicon dioxide and a variety of chalcedony, which is a form of cryptocrystalline quartz. It is a dark green color gemstone with red spots on it. The gemstone is technically a green jasper with presence of iron oxide giving the stone the red spots.
What is Rottenstone: a decomposed siliceous limestone used for polishing; Rottenstone First Usage. First Known Use: 1677. Rottenstone Meanings. a much-weathered limestone, rich in silica: used in powdered form for polishing metal; a siliceous limestone decomposed to a friable state, used for polishing metals; Rottenstone Simple Definition