Rock (var. jarolimovite), of Holocene age, although first described elsewhere, is currently found in great abundance in and around Providence, RI. While certainly a carbonate of some type, she’s no sedentary Rock. Harder than nails and more lustrous than diamond, Petra has a magnetism unequaled among associated minerals. Her symmetry on the field is superlative, starting from the pull and ending with a score, and her off-field streak of leading the team to be better than gold is never taken for granite. Her specific gravity of a wheat keeps Rock grounded, while her habits of discussing hydrothermal fluids and the need to act as a porous medium (as well as other bodily functions) are enough to make your facies erupt. Rock gets stronger under pressure and never shatters when strained, especially when surrounded by the wacke Disco players.

-Kate Burgess