crocidolite

[krō′sīd·əl‚īt]

(mineralogy)

A lavender-blue, indigo-blue, or leek-green asbestiform variety of riebeckite; occurs in fibrous, massive, and earthy forms. Also known as blue asbestos; krokidolite.

riebeckite asbestos

A type of mineral derived from a monoclinic amphibole.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Crocidolite

a mineral, a blue asbestiform variety of the alkaline amphibole mineral riebeckite. Crocidolite occurs in metamorphic shales, forming pockets and veins. Large quantities of crocidolite (in veins) are located near Griquatown and in northeastern Transvaal (South Africa). In the USSR crocidolite deposits are found in the vicinity of Krivoi Rog and in the Urals (the Moiva River in Cherdyn’ Raion). Opal and quartz pseudomorphs after crocidolite are characterized by a beautiful silky luster and are used in jewelry-making as tigereye (golden brown) or hawk’s-eye (light blue).

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References in periodicals archive

The principal varieties of asbestos are a serpentine material called chrysotile, and crocidolite, amosite, anthophyllite, tremolite, and actinolite--which are a type of dark mineral called amphiboles (Mirabelli et al., 2008).

Characteristics of airborne asbestos concentrations in Korean preschools

Risk of mesothelioma from exposure to crocidolite asbestos: A 1995 update of a South African mortality study.

The importance of identified cause-of-death information being available for public health surveillance, actions and research

DISCUSSION: Malignant mesothelioma is pleural malignancy strongly associated with exposure to crocidolite, chrysotile, amosite and all other type of asbestos.

A rare presentation of malignant mesothelioma as encysted hemothorax, without asbestos exposure

There are several types of asbestos and the most commonly heard of are blue (crocidolite), brown (amosite) and white (chrysotile).

Advice on asbestos in the home; Chris Scott of Smithers Purslow has some advice for homeowners on asbestos in the home

Adopted in January 2000, the CCO strictly prohibits the use of amosite (brown) and crocidolite (blue) asbestos fibers and of products containing these fibers, but permits the use of chrysolite (white) asbestos fibers in high density products.

Public warned against asbestos-containing products

[section] 61.141, states: "Asbestos means the asbestiform varieties of serpentinite (chrysotile), riebeckite (crocidolite), cummingtonite-grunerite, anthophyllite, and actinolite-tremolite." Other federal agencies have adopted similar definitions of asbestos that include the same six forms of asbestos, including 29 C.F.R.

The reinvigorated Confrontation Clause: a new basis to challenge the admission of evidence from nontestifying forensic experts in white collar prosecutions

While blue asbestos (crocidolite) and brown asbestos (amosite) are listed and are being progressively replaced in production, the Russian industry is mounting a rearguard action to prevent chrysotile from being listed.

Matt Peacock: Killer Company: James Hardie Exposed

Specifically, they are defined as being long and thin (having an aspect ratio greater than 3:1), and falling into categories of either "serpentine" (chrysotile) or "amphibole" (tremolite, amosite, crocidolite, actinolite, and anthophyllite) [7].

Autoimmunity and asbestos exposure