A dike filled by compacted sedimentary materials including sand and gravels
A dike filled by compacted sedimentary materials including sand and gravels
A hexagonal feldspathoid mineral, (Na,K)AlSiO4
Lava that cools in the conduit of a volcano
A small loose alluvial mass of near pure gold or platinum metal
A compound, mineral or area that does not contain sufficient quantities of iron to be detected or targeted for iron