244 R. Pumpelly—Paragenesis of Copper 
No. 5.* Bay Srare Minz.—1. Prehnite 2. Quart. 3, 
Copper. 4. (?) Laumontite, 
No. 6.* PHa@yix Minz.—Fissure vein. 1. Lawmontite. 2 
Quartz. 38. “ Green- Earth,” 
No. 7.* Bay Srate Minz.—Fisgure vein, 1. Quartz, 2. 
» Apophyllite. 3. Calcite, 
No. 8.* BoHumian MInE.—1l. Anakite. 9, Copper. 3. 
Orthoclase. 
No. 9. AMyepALoID Minz.—Fissure vein, 1. Prehnite, 10 
its characteristic reniform shape. 
- uariz, in small erystals on the prehnite. 
3. Analcite crystals, covering the quartz. 
4. Orthoclase crystals, on the analcite and quartz. 
No. 10. Bay Srare Minz.—Fissure vein. On the soft 
brown gangue. 1. Analcite, lining part of a vugg. The erys- 
tals are } inch in diameter, often white and transparent, but 
very much fractured. Near the contact with the rock they are 
often reddened internally and much altered, and then sur 
mounted by the next member. : 
2. Orthoclase, in the usual minute crystals, some of which are 
scattered over the altered analcites. Bi 
0. 11. Amye@paLor Minz.—Fissure vein. 1. Prehnite, iD 
the characteristic reniform shape, forming the body of the spe 
cimen ; fresh-looking on the free surface, but on the under bro- 
en side somewhat porous, with earthy fracture, and’ then 
rather intimately associated with datolite and a soft green 
(chloritic ?) mineral. 
9. : 
Scope appear to consist of sheaf-like clusters of minute rhol- 
’ ith difficulty. : 
_ & Datolite, in microscopic crystals on No. 8; others, one line 
m rs ameter, rosy, with suspended flakes of copper, lie upon the 
prehnite. 
No, 12. Amyapatom MINE.—(Fissure vein.) On the 
gangue—here chloritic—lie, 1. Culcite, imbedded between thé 
gangue and No. 2. : a 
2. Prehnite, forming the greater part of the specimen, a2 
having a tolerably fresh luster. 
3. Copper, in grains, flakes and threads conforming to the 
radiating cleavage planes of the prehnite. 
