high quartz

high quartz

[′hī ¦kwȯrts]
(mineralogy)
Quartz that was formed at high temperatures.
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References in periodicals archive ?
It is also noted that strength values of Malakand granite is low despite of the greater hardness due high quartz content.
Heating is further favoured by the high quartz content, due to the relatively low heat capacity of quartz (44.50 J [K.sup.-1] [mol.sup.-1] at 298.15 K; Gronvold et al.
The company continued to lead watches with a 12% value share in 2014, and is present within basic, mid and high quartz analogue and mechanical watches.
Both enjoy strong brand recognition in France and offer a wide range of high mechanical and high quartz analogue watches.
High quartz levels lower the CTE, in some cases by more than half versus traditional mould compounds.
The presence of high monocrystalline quartz could be the result of intense reworking of the sediments and / or may bear the character of high quartz content of the source materials.
The high quartz content also means the surface is maintenance free and does not require sealing.
In zones of high quartz content, grossular and vesuvianite crystals are more difficult to remove from the matrix.
While a high quartz load has a positive effect on the phase noise, it will also result in a stronger aging.
Their high quartz content distinguishes them from basaltic rocks, which form when molten magma cools and hardens for the first time.
The "dipyramidal" habit of the Malaga blue quartz might suggest that it formed initially as the "high quartz" or "beta quartz" polymorph, which inverts spontaneously to normal ("low") quartz below 573 [degrees] C.

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