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Amethyst violet

Paraphenylene violet, rhoduline violet, rhoduline heliotrope, methylene violet, methylene hehotrope, tannin heliotrope, ins violet, amethyst violet, cresyl fast violet fit < > 0 ... [Pg.427]

Desensitizing is a process that reduces the light sensitivity of emulsions so that they can be developed in comparatively bright light. Unfortunately, most of the desensitizers once in common use, such as Aurantia, Methylene Blue, Toluylene Red, and Amethyst Violet, don t work well with modern emulsions. [Pg.136]

The amethyst violet sensitized photolysis of the diazosulphone 249 has been studied in ethanol/water mixtures and shown to undergo homolytic fission. The fission results in the... [Pg.532]

Manganese s ability also makes it a chemical chameleon. Two-plus manganese is a soft pink in water and in rocks, three-plus a brown powder, four-plus a black powder, six-plus a lemon-green in water, and seven-plus a deep amethyst violet (amethyst gets its color from manganese ions embedded in glassy quartz). [Pg.148]

Large, pale violet (amethyst colored), transparent, octahedral crystals, soluble in 2 parts of water and insoluble in alcohol. The aqueous solution has an acid reaction. [Pg.122]

Gem quality beryls are aquamarine (blue), emerald (green), and golden beryl. Likewise, amethyst b a violet-colored silica, and sapphire (blue) and ruby (red) are alumina. Yet pure beryl (Be,AI>Si lO ). alica (SiO ). and alumina (AI O>) are colorless. Explain... [Pg.946]

AMETHYST. A purple- or violet-colored quartz having the same physical characteristics as quartz, Tile source of color is not definite but thought to be caused by ferric iron contamination. Oriental amethysts are purple corundum. [Pg.74]

Compare Kosminsky," The Magic and Science of Jewels" It need scarcely be repeated that colour is vibration. Colour is crystallized in a gem and immense vibration defies the material senses of man. A violet amethyst vibrates at the enormous rate of 750 trillions per second whilst a red ruby vibrates at 400 trillions. Hence we can scientifically demonstrate distinct powers by the evidence of known vibratory action. pp.4-5.)... [Pg.98]

Amethyst is a variety of quartz (Si02) that is violet to purple in color, probably because of iron and manganese impurities. It measures 7 on the Mohs hardness scale and is obtained from many places, but mainly from India and Brazil. It should not be confused with oriental amethyst, which is a purple native variety of alumina (Al203). [Pg.153]

Amethyst Oriental sapphire Purple to violet, transparent to translucent Terminated hexagonal prisms rarely massive, color fades on exposure to heat or sunlight... [Pg.24]

Dry tests a. Borax bead test The bead produced in the oxidizing flame by small amounts of manganese salts is violet whilst hot and amethyst-red... [Pg.271]

Green when hot blue when cold. 2. Yellowish-brown or red when hot yellow when cold. 3. Dark yellow when hot, green when cold. 4. Violet (amethyst), hot and cold. 5. Blue, hot and cold. 6. Reddish-brown when cold. Colourless when hot, opaque-red when cold. Green, hot and cold. Green, hot and cold. Colourless, hot and cold. Blue, hot and cold. Grey or black and opaque when cold. Copper. Iron. Chromium. Manganese. Cobalt. Nickel. [Pg.399]

Violet (amethyst) Amethyst Colourless Colourless Manganese... [Pg.548]

There is the violet-coloured ray, too, representing the amethyst. There we see creatures like sylphs, fairies, muses, kings, queens, princes, princesses, all having great talent and wisdom. [Pg.131]


See other pages where Amethyst violet is mentioned: [Pg.342]    [Pg.146]    [Pg.121]    [Pg.110]    [Pg.185]    [Pg.321]    [Pg.342]    [Pg.103]    [Pg.782]    [Pg.911]    [Pg.448]    [Pg.774]    [Pg.968]    [Pg.342]    [Pg.146]    [Pg.121]    [Pg.110]    [Pg.185]    [Pg.321]    [Pg.342]    [Pg.103]    [Pg.782]    [Pg.911]    [Pg.448]    [Pg.774]    [Pg.968]    [Pg.242]    [Pg.1019]    [Pg.100]    [Pg.519]    [Pg.207]    [Pg.216]    [Pg.540]    [Pg.1397]    [Pg.119]    [Pg.311]    [Pg.379]    [Pg.207]    [Pg.467]    [Pg.137]    [Pg.29]    [Pg.84]    [Pg.152]    [Pg.160]    [Pg.379]    [Pg.242]   
See also in sourсe #XX -- [ Pg.103 ]




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