Dr. Kubassek János szerk.: A Kárpát-medence természeti értékei (Érd, 2004)
Dr. Miklós Kázmér: Dr. Edward Browne's visit in the mining towns of Lower Hungary in 1669
it doth not only resemble that in Colur, but, being (as it is easily) burnt, is of the same Tast. So that it is no marvail, if this Stone, with Age and especially much worn and exposed to the Air, looseth the beauty of its colour. And that it may be restored to the same by Oil of Vitriol; which eateth off its faded Surface" (Grew, 1681, pp. 293—294). Possibly another fragment of the same species was given to Woodward. ,A small piece of Bone, having its Surface of a green Colour, and its interior Parts of a blue; broke offfrom a much larger. That is throughout the same Colour. It seems to be part of the scutellated Bone of a Sturgeon; being flat, of a porous or cellular Constitution on one side, tho ' the Cells be somewhat worn down, andflatted; and smooth on the other. 'Tis about 1/10 of an Inch in thickness, 3 Inches long, and 1 Inch and « broad. Taken up near Herngrundt in Hungary; colour d by the Water of the rich Copper-Mines. Given me by Dr. Edward Brown, President of the College of Physicians. Those bodies that the Jewellers call Turcois-Stones, re no other than Pieces of Bones tinged blue by the Copper-Ore, amongst which they were lodg'd. These they cut, polish, and set in Rings. And indeed the same learned Gentleman, in his Travels, p. 68. 2 $ informs us, that in those very Copper-Mines of Herngrundt, are stones found of a beautiful green andblue Colour; and one sort upon which Turcoises have been found, and therefore call'd the Mother of the Turcois. By this I am the better enabled to apprehend an obscure Passage in P. Poterius's Pharm, Spagyr. I. 2. c. 25. where he 1 ^ says, that in the Cabinet of S. Cassiani del Pozzo at Rome, he saw Turcois-Stones made of Ebur-Fossile, exactly like the true natural Turcoises, agreeing with them in all respects, in Colour, in Hardness, and in Virtues". 25 Woodward's footnote: „Turchesios lapides, ex dicto Ebores factos veris, & naturalibus Turchinis Gemmis simillimos, atque in omnibus convenientes, Colore, Duritie, & Virtute praestantes" (WOODWARD, 1729, p. 28). 26 „GOLD ORE of HERNGRUNT, holding Silver. Given by Dr. Edward Brown. It consisteth of sparks of a shining Gold-colour, together with some Black ones, alternately immersed in a white and pretty hard Stone" (GREW, 1681, p. 322).
