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Three polytypes of chrysotile are known. [8] These are very difficult to distinguish in hand specimens, and polarized light microscopy [6] must normally be used. Some older publications refer to chrysotile as a group of minerals—the three polytypes listed below, and sometimes pecoraite as well—but the 2006 recommendations of the International Mineralogical Association prefer to treat it as ...
For games that were originally released as freeware, see List of freeware video games. For free and open-source games, and proprietary games re-released as FLOSS, see List of open-source video games. For proprietary games with released source code (and proprietary or freeware content), see List of commercial video games with available source code.
Amosite and crocidolite are considered the most hazardous asbestos fiber types; [5] however, chrysotile asbestos has also produced tumors in animals and is a recognized cause of asbestosis and malignant mesothelioma in humans, [6] and mesothelioma has been observed in people who were occupationally exposed to chrysotile, family members of the ...
Serpentines find use in industry for several purposes, such as railway ballasts, building materials, and the asbestiform types find use as thermal and electrical insulation (chrysotile asbestos). The asbestos content can be released into the air when serpentine is excavated and if it is used as a road surface, forming a long-term health hazard ...
The following is a list of PC games that have been deemed monetarily free by their creator or copyright holder. This includes free-to-play games, even if they include monetized micro transactions. List
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This is a selected list of freeware video games implemented as traditional executable files that must be downloaded and installed. Freeware games are games that are released as freeware and can be downloaded and played, free of charge, for an unlimited amount of time. This list does not include: Open source games (see List of open-source video ...
The most common asbestiform mineral is chrysotile, commonly called "white asbestos", a magnesium phyllosilicate part of the serpentine group. Other asbestiform minerals include riebeckite, an amphibole whose fibrous form is known as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series.