Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Tiger-eye

Tiger-auge,/. tiger-eye. -sandstein, m. mottled sandstone. [Pg.446]

Chalcedony after Crocidolite Tiger eye Red tiger eye Yellow-brown opaque looks fibrous red or dark brown is tiger eye that has been heat-treated... [Pg.26]

Fig. 32.1 CholestBrol-calcium-pigment stone a rare specimen showing a striking coloured/chemical development (here a so-called tiger-eye stone) (at our disposal). Diagnosis obstructive cholangitis due to Mirizzi s syndrome... Fig. 32.1 CholestBrol-calcium-pigment stone a rare specimen showing a striking coloured/chemical development (here a so-called tiger-eye stone) (at our disposal). Diagnosis obstructive cholangitis due to Mirizzi s syndrome...
The composition of pure quartz is close to 100% pure Si02 because the structure of the mineral is so compact and perfect that there is no room for silica replacement by any other element. Also, quartz is insoluble in all acids except HF, which further contributes to its purity. Quartz forms many micro- and cryptocrystalline varieties. Some of them are well-known as semiprecious stones (amethyst, citrine, agate, tiger-eye, etc.). [Pg.131]

SYNONYMS agate, alpha-quartz, amethyst, crystallized silieon dioxide, flint, onyx, quartz, rock crystal, rose quartz, sand, silica dust, silica flour (powdered crystalline silica), tiger-eye. [Pg.884]

White NW, Chetty R, Bateman ED (1991) Silicosis among gemstone workers in South Africa Tigers-eye pneumoconiosis. Am J Ind Med 19 205-213... [Pg.30]

Tiger s eye Tight-head drums Tiglic acid [80-59-1]... [Pg.993]

Tiger s eye is a yellow and brown-banded gemstone, and Hawk s eye is similar but with blue bands. Both come from South Africa and result from silicification of cross-fiber veins of crocidolite. Cut en cabachon, and parallel to the fiber length. Tiger s eye and Hawk s eye exhibit variations in sheen and color that arise from the not-quite-parallel arrangement of the intimately associated asbestos and quartz. [Pg.78]

CROCIDOLITE (Blue Asbestos). The mineral crocidolilc may be considered as u fibrous variety of the monoclinic amphibole. riebeckile. Ii is also known as a massive mineral. Iis hardness is 4 specific gravity, 3.2-3.3 luster, silky to dull color, blue or bluish-green. It is found in Austria, France. Bolivia, the Republic of South Africa (the variety known as tiger s-eye) and in the United States, in Massachusetts and Rhode Island. The name crocidolile is derived from the Greek, meaning to weave, in reference to its fibrous appearance. See also Uat s-Eye. [Pg.451]

The diagnostic power of the technique is illustrated by the MRI scans of patients with two different neurological conditions. Figure 22.12(a) shows the characteristic eye of the tiger sign observed in patients with... [Pg.427]

Pseudomorphous Occurring in the shape of another mineral through pseudomorphous replacement Tiger s eye... [Pg.202]

See other pages where Tiger-eye is mentioned: [Pg.533]    [Pg.1107]    [Pg.661]    [Pg.760]    [Pg.877]    [Pg.329]    [Pg.661]    [Pg.284]    [Pg.375]    [Pg.533]    [Pg.1107]    [Pg.661]    [Pg.760]    [Pg.877]    [Pg.329]    [Pg.661]    [Pg.284]    [Pg.375]    [Pg.221]    [Pg.223]    [Pg.224]    [Pg.120]    [Pg.344]    [Pg.97]    [Pg.95]    [Pg.221]    [Pg.223]    [Pg.224]    [Pg.1397]    [Pg.12]    [Pg.443]    [Pg.226]    [Pg.435]    [Pg.86]    [Pg.116]    [Pg.126]    [Pg.123]    [Pg.219]    [Pg.274]    [Pg.151]   
See also in sourсe #XX -- [ Pg.26 ]



SEARCH



Tiger

Tiger s eye

© 2024 chempedia.info