. Bulletin of the British Museum (Natural History), Mineralogy. 384 THE NATURALLY OCCURRING. Fig. I. Crocoite, Berezov ; after Haiiy, 1801. to France he gave the crystaUine material to Rene Just Haiiy for study. Haiiy recognized two habits characterized by elongation in two possible directions, and some of his crystal drawings are figured in his Traite (1801). The largest crystals were 10-12 lignes^ long and were loosely attached to their quartz gangue. Macquart also described the associated species on these specimens. One of these was probably vauquehnite (see later). Another was a crystallin
. Bulletin of the British Museum (Natural History), Mineralogy. 384 THE NATURALLY OCCURRING. Fig. I. Crocoite, Berezov ; after Haiiy, 1801. to France he gave the crystaUine material to Rene Just Haiiy for study. Haiiy recognized two habits characterized by elongation in two possible directions, and some of his crystal drawings are figured in his Traite (1801). The largest crystals were 10-12 lignes^ long and were loosely attached to their quartz gangue. Macquart also described the associated species on these specimens. One of these was probably vauquehnite (see later). Another was a crystalline mineral that had the colour of native sulphur. This was probably cerussite stained with chromates. Another yellow mineral, in slender needles, was probably vanadinite or pyromorphite. And what Macquart described as 'oxide jaune ou ocre de plomb' (seen on specimen No. 24, misprinted 34) was possibly embreyite. Assisted by L. N. Vauquelin, Macquart (1789) attempted an analysis of plomb rouge and obtained : Pb 36^%, O 37!, Fe 24!, alumina 2 (totalling ioof%) ; the excess he attributed to moisture in his precipitates. ^ Macquart discussed the use of pulverized plomb rouge as an orange pigment for painters, noting that it should be superior to arsenic sulphides, which tended to darken in the French climate. E. M. L. Patrin, who visited Berezov in 1786, was concerned about the supply of pigment from the mines. The best vein of crocoite had pinched down to the width of two pousses^ by this time, and no good material had been found for 15 years. As the supply of the mines dwindled, the price of specimens soared, and Soret (1818) mentioned that 'D'immenses druses, provenant du cabinet de Sitnikoff, ont ete bocardees pour cet usage [as a pigment for ceramics] ; plus les cristaux sont nets et transparens, plus ils sont recherches'. B. F. J. Hermann (1789) visited Berezov at about the same time as Macquart. He placed the time of first mining there at 1744, and milling began in 1752 - a d
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