davidite


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davidite

[′dā·və‚dīt]
(mineralogy)
A black primary pegmatite uranium mineral of the general formula A6B15(O,OH)36, where A = Fe2+, rare earths, uranium, calcium, zirconium, and thorium, and B = titanium, Fe3+, vanadium, and chromium.
References in periodicals archive ?
These are thumbnail-size loose crystals of the complex rare-earth oxide davidite (whether davidite-(Ce) or davidite-(La) or davidite-(Y) no one seems to know), hailing from what is said to be a new prospect in a rare earth-bearing pegmatite at Bektau-Ata, Karaganda, Kazakhstan.
The company managing director, Jim Kerr, said, 'Obviously we are encouraged by the early confirmation of uranium mineralisation associated with what we think is in-situ davidite in trenching and in drill core.
As a biblical king who had rebelled against the Davidic line and a military figure who was also an idolator (he introduced the worship of the golden calves), Jeroboam was a powerful figure by which Cromwell could be attacked, thus legitimating both Charles I and Charles II, the true Davidite who was at last restored.
plus tabular black crystals of a mineral variously described as crichtonite, senaite or davidite.
plus tabular, black crystals of a mineral variously described as crichtonite, senaite or davidite.
The distance from dioptase to davidite is, on the beauty-meter, at least as great as the distance from your home to Kazakhstan, but I'm duty-bound to mention that a few dealers had record-size crystals of this rare, rare-earths/uranium oxide species, from a new digging at Bek-tau Alta, Kazakhstan.
And, after a divisive election campaign in a party still haunted by factionalism, Mr Johnson's appointment may help heal some of the wounds Ed has inflicted on the Davidites.
Imaginary voices crowd the pages of Krebs's book as his notions concerning rhythm and meter are kicked about and mulled over by those vigilant defenders of musical progress, Schumann's Society of Davidites.
Krebs's book thus operates on several narrative levels, all of which create interesting possibilities for presenting material: a formal approach is maintained in the text of the treatise, while the Davidites chatter away in a colloquial tongue; primary source material is presented through the authoritative (if imaginary) voices of the original authors; and Florestan and Eusebius discuss the merits of various interpretations of their music, comment upon the creative genesis of their works as evidenced by sketches, and cite a dizzying number of examples from their own works in support of theoretical points made in the treatise--one cannot imagine better second readers
Etudes for Piano Teachers is dedicated to "Today's New Davidites .
What many of us who earn a living teaching the piano in America may share with the original Davidites is the feeling that we must do daily battle with Philistine values.