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Spent fluorescent lamps are typically packaged prior to transport to a recycling facility in one of three ways: boxed for bulk pickup, by using a prepaid lamp recycling box, or crushed onsite before pickup. A fluorescent lamp crusher can attach directly to a disposal drum and isolate the dust and mercury vapor.
A fluorescent lamp crusher consists of a vacuum-sealed container, often a 55-gallon steel drum, in which glass fragments collect after passing through an entry tube and crushing mechanism. The mercury content of the lamp is contained by the vacuum and trapped in a filter arrangement, which must be replaced periodically.
At its type locality, franklinite can be found with a wide array of minerals, many of which are fluorescent. More commonly, it occurs with willemite, calcite, and zincite. In these rocks, it forms as disseminated small black crystals with their octahedral faces visible at times. It may rarely be found as a single large euhedral crystal.
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
Several countries have specialised recycling or disposal systems for fluorescent bulbs. According to the U.S. Environmental Protection Agency (EPA), the amount of mercury contained in a compact fluorescent lamp (about 4–5 mg [20]) is approximately 1% of the amount found in a single dental amalgam filling or old-style glass thermometer. [21]
In 2013, Colombia implemented an EPR law that ultimately focused on enforcing guidelines for managing electronic waste. Additionally, the country has developed a number of “post-consumer programs for used batteries, medicine, computers and printers, fluorescent light bulbs, used tires and pesticide containers”. [25]
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Luminescence occurs in some minerals when they are exposed to low-powered sources of ultraviolet or infrared electromagnetic radiation (for example, portable UV lamps), at atmospheric pressure and atmospheric temperatures. This property of these minerals can be used during the process of mineral identification at rock outcrops in the field.