Catálogo Instructivo de las Colecciones Mineralógicas

This guide offers a thorough overview of mineral specimens arranged for classroom collections, beginning with the outward shapes of crystals—cubes, pyramids, prisms, and more. Each form is linked to a numbered entry, distinguishing items intended for primary‑school sets from those for secondary‑school curricula. The clear layout lets educators and enthusiasts quickly locate examples such as pyrite cubes, quartz hexagonal pyramids, or garnet dodecahedra.

The second part turns to the physical traits that define each mineral. Readers find concise tables on cleavage planes, fracture styles, hardness scales, tenacity, and luster, all cross‑referenced with the same numbering system. Whether noting the perfect cleavage of mica or the conchoidal break of obsidian, the text presents the data in a way that supports hands‑on learning and accurate identification.

Beyond pure minerals, the work also touches on fossilized forms, aggregates, and epigenetic alterations, giving a broader context for natural history studies. Its systematic approach makes it an invaluable companion for teachers, students, and hobbyists building or curating mineral displays.