Chert (Wikipedia)Chert (/ˈtʃɜːrt/) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood.
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Clinton, Washington (Wikipedia)Clinton is a community and census-designated place (CDP) located on southern Whidbey Island in Island County, Washington, United States. The town was named after Clinton, Michigan. As of the 2010 census, the village was 928. However, the post office serves at least 2,500 people.
