एक खनिज जो लोहे और मैग्नीशियम और कैल्शियम और सोडियम युक्त एल्यूमीनियम का एक जटिल बोरोसिलिकेट और हाइड्रोक्साइड है; यह आमतौर पर काला होता है लेकिन पारदर्शी रंग के रूपों में होता है जो रत्नों के रूप में उपयोग किए जाते हैं

Noun:

टूमलाइन,

tourmaline's Usage Examples:

Among the commonest associates of the diamond are quartz, topaz, tourmaline, rutile, zircon, magnetite, garnet, spinel and other minerals which are common accessory constituents of granite, gneiss and the crystalline schists.

Under all these three conditions the diamond is associated with fragments of the rocks of the country and the minerals derived from them, 'especially quartz, hornstone, jasper, the polymorphous oxide of titanium (rutile, anatase and brookite), oxides and hydrates of iron (magnetite, ilmenite, haematite, limonite), oxide of tin, iron pyrites, tourmaline, garnet, xenotime, monazite, kyanite, diaspore, sphene, topaz, and several phosphates, and also gold.

Sapphires are also found in Kashmir, where they occur, associated with tourmaline, in the Zanskar range, especially near the village of Soomjam.

In blue tourmaline and in iolite - stones sometimes mistaken for sapphire - the dichroism is much more distinct.

In other cases, especially near mineral veins, slates are filled with black needles of tourmaline or are bleached to pale grey and white colours, or are silicified and impregnated with mineral ores.

Tourmaline or rubellite is found on the borders of the Ruby Mines district and in the Shan State of Mong Long.

Throughout the world, primary deposits of tinstone are in or closely connected with granite or acid eruptive rocks of the same type, its mineral associates being tourmaline, fluorspar, topaz, wolfram and arsenical pyrites, and the invariable gangue being quartz: the only exception to this mode of occurrence is to be found in Bolivia, where the tin ore occurs intimately associated with silver ores, bismuth ores and various sulphides, whilst the gangue includes barytes and certain carbonates.

Flattened crystals of garnet, films of quartz, and needles of tourmaline are not uncommon.

Zircon, tourmaline, garnet and other precious stones of little commercial value are found throughout Australia.

Other valuable stones, the topaz, chrysolite, aquamarine amethyst and tourmaline are found.

tourmaline's Meaning':

a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones

Synonyms:

schorl, transparent gem, mineral,

Antonyms:

organic,