- Aphanites (adj. aphanitic; from Ancient Greek αφανης (aphanḗs) ‘invisible’) are igneous rocks that are so fine-grained that their component mineral crystals are not visible to the naked eye (in contrast to phanerites, in which the crystals are visible to the unaided eye). This geological texture results from rapid cooling in volcanic or hypabyssal (shallow subsurface) environments. As a rule, the texture of these rocks is not the same as that of volcanic glass (e.g., obsidian), with volcanic glass being non-crystalline (amorphous), and having a glass-like appearance.
- Don Miguel Ruiz (Wikipedia)
Miguel Ángel Ruiz Macías (born August 27, 1952), better known as Don Miguel Ruiz, is a Mexican author of Toltec spiritual and neoshamanistic texts. His work is best-received among members of the New Thought movement that focuses on ancient teachings as a means to achieve spiritual enlightenment. Ruiz is listed as one of the Watkins 100 Most Spiritually Influential Living People in 2018. Some have associated Ruiz’s work with Carlos Castaneda, author of The Teachings of Don Juan.
- Mineral (Wikipedia)
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.