3S 



68. Veined flu or, called by the miners, Blue John. 



69. Group of quartz crystals, incrusted with transparent, termi- 



nated, six-sided prisms of heavy spar. 



70. 71. Two six-sided prisms of quartz, with six-sided pyramids, 



of a beautiful brownish tint. 



72. Pseudomorphus quartz, sprinkled with blende. From Alston, 



England. 



73. Talc. 



74. Green talc. 



75. Black spinelle. 



76. Brown garnet. Crystals with twenty trapezoidal faces. 



77. Green feldspar. Siberia. 



78. Glassy feldspar. Near Bonn. 



79. Chrysoberyl. Near Saratoga Springs. 



80. Beryl. Acworth, N H. 



81. Beryl, (imbedded.) Acworth, N. H. 



82. Staurotide. Litchfield, Massachusetts. 



83. Staurotide. Franconia. 



84. Brucite, in carbonate of lime. Warwick, New- York. 



85. Onyx agate. Siberia. 



86. Chrysoprase. Baumgarten. 



87. Olivine. Habichtwald. 



88. Cyanite. Chesterfield. 



89. Asbestus. Greenwood furnace, Orange county, New-York. 



90. Gold ore. Charlotte, North Carolina. 



91. Silver ore. Siberia. 



92. Muriate of silver. Siberia. 



93. Copper ore. Franklin, New-Jersey. 



94. Arseniate of copper, on arsenical iron. Amity, New-York. 



95. Red oxide of copper. Siberia. 



96. Red oxide of copper, incrusted with green carbonate of copper 



and quartz. Siberia. 



97. Blue carbonate of copper. Siberia. 



98. Malachite. Siberia. 



99. Veins of lead ore. From the Odin mine. 



100. Slicken side galena. From the Odin mine. 



101. Arseniate of lead. From Caldbeck Fells, Cumberland. 



102. Arsenical pyrites ? incrusting quartz crystals. Caldbeck Fells, 



Cumberland. 



103. Molybdena. Caldbeck Fells. 



