What's the difference between brucite and nemalite?

Brucite

Definition:

(n.) A white, pearly mineral, occurring thin and foliated, like talc, and also fibrous; a native magnesium hydrate.
(n.) The mineral chondrodite.

Example Sentences:

(1) Such manipulation also decreases fiber crystallinity, alters Si-O and Mg-O interlayer bonding, induces coordination changes in the brucite layer, diminishes the ability of fiber to reduce specific free radicals and physisorb organic molecules, and decreases hemolytic potency and antagonist sorption capabilities.
(2) Animals treated with 'brucite' developed moderate levels of pulmonary fibrosis and two carcinomas.
(3) Among these are tremolite and brucite although pure tremolite is also produced commercially in relatively small quantities.
(4) Both tremolite and brucite produced mesotheliomas in greater than 90% of animals following i.p.
(5) However, it was found that the supposedly pure brucite in fact contained 10% chrysotile, a level of contamination that could well have been responsible for the pathological changes found in both inhalation and intraperitoneal injection studies.
(6) In order to determine how harmful commercially exploited tremolite might be in comparison with other asbestos types and to explore the possibility that small amounts of tremolite and brucite as contaminants could significantly affect the pathogenicity of industrially used chrysotile, long-term animal inhalation and injection studies using rats were undertaken with what were considered to be mineralogically pure samples of these minerals.
(7) Mesotheliomata were observed in a considerable proportion of animals with all the samples of asbestos used and with a sample of brucite.

Definition:

Example Sentences:

(1) A high incidence of tumours (most of them mesotheliomas) was induced in rats by intraperitoneal injection of fibrous dusts (chrysotile, palygorscite, crocidolite, glass fibres, nemalite).
(2) We have found certain fibres to be highly effective in producing radicals from dissolved oxygen (Canadian chrysotile, nemalite, freshly ground amphiboles) while others have little effect.
(3) Fibrous dusts (chrysotile, glass fibers, nemalite, palygorscite, and gypsum) and granular dusts (actinolite, biotite, hematite, pectolite, sanidine, and talcum) were injected intraperitoneally into rats.
(4) Lipid peroxidation, measured by malondialdehyde formation is induced in rat liver microsomes by insoluble iron-containing minerals (pyrite, magnetite, nemalite and an iron ore, minette de Lorraine) which are generally found either in iron mines or as contaminants of asbestos fibers.