PIERRE CRUCIFORME. 



PiEREE CRUCIFORME, Brochant. Cross- 

 stone. See Harmotome. 



Pierre d'alun. See Alumstone. 



Pierre d'amadou. See Tinder-ore. 



Pierre d'Armenie, Beudant. Compact 

 earthy Augite, mixed witli foreign matters. 



Pierre d'arquebuse. Iron Pyrites, 

 (^3Iarcasite). In the earlier times of the 

 invention of fire-arms, Pyrites was used 

 instead of Flint (see Pierre 1 fusil), by 

 which it was subsequently superseded. 

 Hence it obtained the name of Pierre d'ar- 

 quebuse, by which it was sometimes called. 



Pierre d'aspeege, Brochant. See As- 

 paragus Stone. 



Pierre d'Azur, Brochant. See Lapis 

 Lazuli. 



Pierre de Baram. A name for Pot- 

 stone, which is made into culinary vessels in 

 Upper Egypt. 



Pierre" de Bologne. See Bolognese 

 Stone. 



Pierre de carabine. Marcasite. See 

 Pierre d'arquebuse. 



Pierre de casse-tete. Jade. See Ne- 

 phrite. 



Pierre de Come. A name for Potstone, 

 after the quarries at Como in Italy, which 

 have been worked from time immemorial. 



Pierre de Cosne. Potstones from the 

 Grisons. 



Pierre de Corne. See Hornstone. 



Pierre de croix. See Staurotide. 



Pierre de foudre. See Meteorite. 



Pierre d'etain, Brochant. Tin- stone. 

 See Cassiterite. 



Pierre de gallinace. A name ap- 

 plied in Peru to greenish- or greyish -black 

 Obsidian. 



Pierre de hache, Axe-stone. -| 



Pierre de iu of the Chinese. I ggg jq-^,. 

 J acie. c pjjj^Tj'jj 



Pierre de ia. circoncision. 

 Jade. -^ 



Pierre de Labrador, Brochant. See 

 Labradorite. 



Pierre de lard. Lardite. See Agal- 



MATOLITE. 



Pierre de lune. See Moonstone. 



Pierre de lune argentine. A name 

 given by French lapidaries to Adularia 

 {Moonstone'), from Mt. Stella, St. Gotthard, 

 where the finest stones are obtained, 



Pierre de Lydie. See Lydian Stone. 



Pierre de Marmarosch. A pulverulent 

 phosphate of lime from Marmai-os,in Eastern 

 Hungary, in which Klaproth detected the 

 presence of fluoric acid. 



PIGOTITE. 287 



Pierre de miel, Brochant. See Mel- 

 lite. 



Pierre de paille. See Carpholite. 



Pierre de poix. The named used by 

 Daubenton, to comprehend all the varieties 

 of resinous Quartz. 



Pierre de porc. Lardite. See Agal- 



MATOLITE. 



Pierre de savon, Haiiy. See Sapo- 



NITE. 



Pierre de serin, Haiiy. Epidote from 

 Arendal. See Arendalitb and Acanti- 



CONITE. 



Pierre de soleil. See Sunstone. 

 Pierre de Thum, Brochant. Thumer- 

 stone. See Axinite. 



Pierre de tripes, Beudant. A concre- 

 tionary variety of Anhydrite, assuming the 

 appearance of an intestine several times 

 folded on itself. It is found at Wielickza in 

 Poland, imbedded in Rock Salt. 



Pieere de touche. See Touchstone. 



Pierre des Amazones. See Amazon 

 Stone. 



Pierre des Incas. A kind of Marcasite, 

 having a brilliant lustre, and a colour some- 

 what approaching to tin-white, when first 

 found, and bearing the same relation to 

 European Marcasite, which is generally of 

 a bronze colour, that white gold does to 

 ordinary gold. 



The Incas, or ancient kings of Peru, at- 

 tributed many virtues to this stone, and 

 wore it in rings and as amulets, which were 

 buried with them after death. Some of 

 these are said to have been taken from the 

 tombs of princes who had been buried 400 

 years, without appearing to have undergone 

 any alteration. It is said that the only 

 mirrors in use amongst the ancient Peru- 

 vians were formed of this stone, until the 

 reign of the Inca Huaynacapac, who was 

 defeated by Pizarro in 1532. 



Pierre du Levant. See Dolomite. 



Pierre en tige. See Scapolite. 



Pierre granulaire. See Sugarstone. 



Pierre grasse. Levy. See El.^olite. 



Pierre ollaire. See Potstone. 



Pierre ponce. See Pumice. 



Pierre puante, Brochant, La Metherie. 

 See Stinkstone. 



Pierre sanguine. A name given by 

 the French to Hematite, because of its 

 blood-red streak. 



PiGOTiTE, Johnston. A mineral compound 

 of alumina and mudeseous* acid, forming an 



* From (AiJhvia-is, decay through excess of moisture. 



