In 1979 the Florida Legislature designated agatized coral as the Florida State Stone. It is described in the statute as “a chalcedony pseudomorph after coral, appearing as limestone geodes lined with botryoidal agate or quartz crystals and drusy quartz fingers, indigenous to Florida.” See below to discover the rocks and minerals of Florida. To view information about Florida's geologic formations, visit Formations page.
A variety of cryptocrystalline quartz (SiO2). It is found in a variety of colors, typically gray, brown, black, white and sometimes red. Fossil corals and mollusks may be replaced with agate deposited by silica-rich ground water percolating through limestone.
This guide was written to serve as a tool for the identification, occurrence, production and use of Florida's most common rocks and minerals. It was primarily intended to be a simplified general reference for the student; therefore, technical information and detailed descriptive material were minimized. Some of the terminology used in these webpages (color, streak, hardness, specific gravity, cleavage) is explained in the guide.
November 9, 2021 - 1:23pm
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The Florida Department of Environmental Protection is the state’s lead agency for environmental management and stewardship – protecting our air, water and land. The vision of the Florida Department of Environmental Protection is to create strong community partnerships, safeguard Florida’s natural resources and enhance its ecosystems.