The strontium exists as strontianite in solid solution within the host calcite with the strontium content of up to one percent.
12.
In 1791-2 Hope discovered the chemical element strontium and named it after Strontian, the west highland village where he found strontianite.
13.
In the Silurian New York strontianite is observed in cavities in eastern Lockport, where it occurs as small white radiating sprays of acicular crystals.
14.
Because of its extreme reactivity with oxygen and water, this element occurs naturally only in compounds with other elements, such as in the minerals strontianite and flares.
15.
It occurs in association with alstonite, barite, barytocalcite, calcite, daqingshanite, fluorite, huntite, monazite, phlogopite, pyrite, sphalerite, strontianite, and quartz.
16.
He named the mineral strontianite ( strontium carbonate ) and made clear that it was distinct from the witherite ( barium carbonate ) and stated that it contained a new element.
17.
The strontium hydroxide was recycled in the process, but the demand to substitute losses during production was high enough to create a significant demand initiating mining of strontianite in the M�nsterland.
18.
In 1790, along with his colleague William Cruickshank at the Royal Military Academy, Woolwich, London, Crawford noted the distinctiveness of strontianite from barium minerals, and may thereby be said to be the discoverer of strontium.
19.
Both strontium and strontianite are named after Strontian, a village in Scotland near which the mineral was discovered in 1790 by Adair Crawford and William Cruickshank; it was identified as a new element the next year from its crimson-red flame test color.
20.
The ideal formula of strontianite is SrCO 3, with molar mass 147.63 g, but calcium ( Ca ) can substitute for up to 27 % of the strontium ( Sr ) cations, and barium ( Ba ) up to 3.3 %.
