CATALOGUE OF GEOLOGICAL COLLECTIONS, 135 
CATALOGU E—Continued. 
I1l.—ERUPTED ROCKS—LOWER COLORADO. 
No. Name Locality 
79 | Brecciated porphyry Purple Hills 
80 | Porphyry, (lilac) do 
81 | Brecciated porphyry, (red) Chocolate mountains. .............. 
82 | Porphyrytic trachyte, enclosing jasper Parple Hills 
83 | Trachyte, (drab) Purple Hill cafion 
84 | Trachyte, (lilac) Purple Hills 
85 | Trachyte, (white) oO 
86 | Porphyry with drusy quartz do 
87 | Porphyry, (purple) ........ do 
88 | Quartz crystals in trachyte do ....-. 
89 | Quartz vein in mica slate on BO enw anew 
9S ih vecettieds do Oo sin ASSO 
~91.)-Traghytevessscdeucud BO acemddUiaiion Cebihidceeeehd 
92 | Trap et 
93 | Trachyte CU ccseile imitate 
94 | Hornblende rock veins in mica slate dO. noiinn 
95 | Mica slate Hills opposite Chimney Peak ........ 
_96 | Talcose slate do ‘ do 
97 | Trachyte Chocolate mountains ........--..-++ 
98 | Trachyte, (red) do 
99 | Drusy quartz, lining cavities in trachyte Purple Hills 
100 | Basalt Chocolate mountains ............... 
101 | Porphyry do SUD ei 
102 | Trachyte do 
103 | Porphyry, (dark red) an 
104 | Trachyte Purple Hills 
105 | Granite : Chocolate mountains... ...--+ 2-00 
106 | Mica slate Near Chimney Peak 
107 | Trachyte Barrier rocks 
108 | Tufaceous trachyte Light-house rock 
109 | Metamorphic sandstone do 
110 hyte Porphyry Gate 
111 | Trachyte, (veined) = 
112 | Mica slate, containing veins of copper Near Chimney Peak 
113 | Quartz, containing iron Riverside mountain 
114 1 as s. Purple Hills 
115 | Quartz, with carbonate of copper | Riverside mountain. .... oo ence udewes 
116 | Eroded metamorphic limestone | do 
117 | Weathered limestone with silicious bands do 
118 | Weathered mica slate - : 
119 | Weathered metamorphic limestone do 
120 | Tufaceous limestone do 
121 | Metamorphic limestone do : 
122 | Red trachyte do 
123 | Mica slate do 
124 Augitic trap 
125 | Fibrous talc. 
