Tourmaline
61Momeik — Mong Mit (မိူင်းမိတ်ႈ) …
62Momeik — Elbaïte extraite à Momeik Momeik, ou Mong Mit en shan, est une ville de Birmanie située dans le nord de l État Shan, au bord de la Shweli (un affluent de l Irrawaddy). Sommaire …
63turmalină — TURMALÍNĂ, turmaline, s.f. Nume dat mai multor silicaţi naturali de sodiu, calciu, magneziu şi aluminiu, cu bor1, cristalizaţi şi divers coloraţi, folosiţi ca pietre semipreţioase sau în optică, radiotehnică etc. – Din fr. tourmaline. Trimis de… …
64Turmalin — Sm (ein Edelstein) per. Wortschatz fach. (20. Jh.) Entlehnung. Entlehnt aus frz. tourmaline f., ne. tourmaline, dieses aus singhal. turamalli. Ebenso nndl. toermalijn, ne. tourmaline, nfrz. tourmaline, nschw. turmalin, nisl. túrmalín.… …
65Chrysoberyl — General Category Oxide minerals Spinel group Chemical formula Be …
66Pyroelectricity — is the ability of certain materials to generate an electrical potential when they are heated or cooled. As a result of this change in temperature, positive and negative charges move to opposite ends through migration (i.e., the material becomes… …
67Crystal habit — This article is about the descriptive term used in mineralogy. For the addictive drug, see crystal methamphetamine. Pyrite sun (or dollar) in laminated shale matrix. Between tightly spaced layers of shale, the aggregate was forced to grow in a… …
68Scapolite — (Gr. asairos , rod, stone), is a group of rock forming silicate minerals composed of aluminium, calcium and sodium silicate with chlorine, carbonate and sulfate. The variations in composition of the different members of the group may be expressed …
69Piezoelectric sensor — A piezoelectric sensor is a device that uses the piezoelectric effect to measure pressure, acceleration, strain or force by converting them to an electrical signal.ApplicationsPiezoelectric sensors have proven to be versatile tools for the… …
70Optical mineralogy — A petrographic microscope, which is an optical microscope fitted with cross polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.… …
