Petrology

Moon rock or lunar rock is rock that is found on the Earth's moon, or lunar material collected during the course of human exploration of the Moon.

(For other uses of "Rock", see Rock (disambiguation).)("Rocks" and "Stone" redirect here. For other uses, see Rocks (disambiguation) and Stone (disambiguation).) In geology, rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids.

A xenolith (Ancient Greek: "foreign rock") is a rock fragment which becomes enveloped in a larger rock during the latter's development and hardening.

Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water.

Stratigraphy is a branch of geology which studies rock layers (strata) and layering (stratification).

Geode (Greek γεώδης - ge-ōdēs, "earthlike") are geological secondary structures which occur in certain sedimentary and volcanic rocks.

Elements: An International Magazine of Mineralogy, Geochemistry, and Petrology is a bimonthly peer-reviewed scientific journal published by 17 scientific societies: Mineralogical Society of America, Mineralogical Society of Great Britain and Ireland, Mineralogical Association of Canada, Geochemical Society, Clay Minerals Society, European Association of Geochemistry, International Association of GeoChemistry, Société Française de Minéralogie et de Cristallographie, Association of Applied Geochemists, Deutsche Mineralogische Gesellschaft, Società Italiana di Mineralogia e Petrologia, International Association of Geoanalysts, Polskie Towarzystwo Mineralogiczne (Mineralogical Society of Poland), Sociedad Española de Mineralogía (Spanish Mineralogical Society), Swiss Society of Mineralogy and

The Ostwald–Freundlich equation governs boundaries between two phases; specifically, it relates the surface tension of the boundary to its curvature, the ambient temperature, and the vapor pressure or chemical potential in the two phases.

Migmatite is a rock that is a mixture of metamorphic rock and igneous rock.

The Lunar basalt 70017 is a moon rock gathered in 1972 by astronauts Eugene Cernan and Harrison Schmitt on the Apollo 17 mission near their Apollo lunar lander from the valley of Taurus-Littrow on the moon and divided into 1.

A xenomorph (also: allotriomorph) is a mineral that did not develop its otherwise typical external crystal form because of late crystallization between earlier formed crystals.