adamantine spar

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adamantine spar

[‚ad·ə′man‚tēn ′spär]
(mineralogy)
A silky brown variety of corundum.
References in classic literature ?
And the king, when he is highest provoked, and most determined to press a city to rubbish, orders the island to descend with great gentleness, out of a pretence of tenderness to his people, but, indeed, for fear of breaking the adamantine bottom; in which case, it is the opinion of all their philosophers, that the loadstone could no longer hold it up, and the whole mass would fall to the ground.
Fyne herself, who had come to the table armed with adamantine resolution.
This devotion deeply moved her - and the adamantine face lost the stern rigidity of its terror.
Spenlow came in, and then described what had passed; giving him to understand that I was not hopeless of his being able to soften the adamantine jorkins, if he would undertake the task.
the compression of the thoughts; the novelty and the subtlety, yet solidity and importance, of the distinctions; the adamantine chain of the logic; and the clearness and evidence' in Kant's work.
The adamantine Shawangunks are an island surrounded by valleys: The Great or Wallkill Valley to the southeast, the Rondout Valley to the northwest, and the Hudson River Valley to the east.
Science, then, pushes through the veil of ordinary observation into an adamantine world of pure essences governed by intelligible necessities.
13), when 'four straight pillars / with adamantine bases / shot up from the roots of the earth / and on their capitals they supported / the rock .
Its relatively small size, union membership never reaching more than 3,000, and the fortuitous presence throughout these years of a union president, Agustin Tosco, of great prestige, adamantine integrity, and deep democratic convictions, also fostered the participatory union democracy and established a leadership highly sensitive to the changing moods of the rank and file.
35)--is unable to pursue her love of mathematics at university because of her adamantine father's bigotry.
Italian historian Renzo Falaschi, in his biography Ismail Kemal: Bey of Vlora, observed: "With their indomitable and adamantine character, the Albanians imposed even more adaptations to Islam than vice-versa," he wrote.
Carter blew it and I never cared for him much either, but next to Clinton he was a man of adamantine political principle.