Limestone (possible fossiliferous or micritic) — sedimentary Identification & Properties | Geo-Gem
Limestone (possible fossiliferous or micritic) is a sedimentary. To confirm limestone, perform a drop of dilute hydrochloric acid (10%) on a fresh surface; vigorous bubbling indicates calcite. Scratch with a steel knife—should scratch easily (hardness ~3). Examine with a hand lens for any small visible…