Silver, colour

Fig. 3.70 depicts the /i(pH) dependence of lyso PC films at po = 42 Pa, t = 30°C and constant ionic strength. In the pH range from 4.2. to 5.8, equilibrium silver-coloured films with mean h values of about 50 - 70 nm were formed. In some experiments, NBF of 7.6 nm thickness were formed, thus marking a fluctuation zone where both silver-coloured and NBF could be observed. Below pH = 4.1 only NBF formed. 

Similar to rude golden-red silver in silver coloured loadstone. 

Long, ashen, sexangular, transparent Fluors, in a hard, ashen stone, like the sea urchin, interspersed with silver-coloured grains of pyrites. 

Quadrate, pellucid Fluors, covered with silver-coloured pyrites. 

Long, white, opaque, sexangular.Fluors, like an erect beam, in a beautiful silver-coloured pyrites. 

White opaque Fluors, ornamented with beautiful grains of silver-coloured pyrites and purple Fluors. 

The Livonian, silver-coloured, sparkling magnetic Stone, which can be broken into thin scales. 

Round red Stones, found in a silver-coloured magnetic clod. 

Cloddy, silver-coloured, Marieberg Mica, in crustaceous flints, i.e., Homstone. 

Various kinds of Pyrites are found in our mines-Silver Colour, almost Gold Colour, True Gold Colour like Galena, Ashen Colour, and Iron Colour. 

Silver-coloured Pyrites, the White or Water Pyrites, or Gravel of the Metallurgists. Silver is smelted from it. Pliny mentions it, if I mistake not, but, like all the ancients, is ignorant of its argentiferous character. Copper is also smelted from it, as Serapion testifies of Marcasite. Dioscorides also plainly states this fact concerning Pyrites. Silver-coloured Pyrites sometimes contains Silver only, sometimes Copper only, sometimes both, and again it may contain Silver and Black Lead, or several metals. Occasionally it is barren. I consider that it usually has more Silver than any other substance. 

Silver-coloured, dyed grey by a slimy or poisonous vapour. 

Scaly, resembling the skin of a serpent, dyed grey by subterranean vapour. Silver-coloured Pyrites ... 

Silver-coloured, in a Stone, like a hard Pyrites. 

A Hard Vein of Silver-coloured Pyrites, vulgarly called Aquatic, like Sibana when exposed in an open and sunny place, a thin. White Atrament and Alum exude. When exposure to the air continues too long, it degenerates into a crumbling and earthy condition. 

These compounds provide examples of all our classes (a), (b), and (c). MgS and the alkaline-earth compounds form ionic crystals, but the same (NaCl) structure is adopted by MnS (but no other 3d monosulphide) and by the 4f and 5f compounds. This illustrates the point that similarity in geometrical structure type does not imply similar bond character witness the silver coloured PbS and the metallic gold colour of LaS. The d transition-metal monosulphides (class (b)) are considered shortly. 

Take the above said Sulphur of Nature, and project a quantity upon a plate of glass fiery hot, and the glass shall be converted into a silver colour, and that colour shall not be removed by any art. 

Beryllium and magnesium are greyish metals, while the remaining group 2 metals are soft and silver-coloured. The metals are malleable, ductile and quite brittle in air, the shiny surface of each metal quickly tarnishes. 

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