302 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
LODE SYSTEMS. 
The Conundrum lode is coincident with the Conundrum “basalt” dike and has 
a general strike of N. 5° W., with an easterly dip of 70°. The Bonanza King is a 
strong, regular lode which lies south of the Midget shaft and strikes N. 60° E. It 
dips steeply to the northwest. The Midget lode, near the Midget shaft, strikes N. 
23° E. As the Moon-Anchor mine is approached, however, the lode curves east¬ 
ward, and near the compromise line between the two properties strikes N. 50° E. 
South of the shaft the Midget lode curves gently southward and crosses the Bonanza 
King lode with a nearly north-south strike. # That part of the lode south of the 
Bonanza King is known as the Murray lode. The Midget lode dips southeasterly, 
the angle ranging from 60° south of the Bonanza King to nearly 80° near the Moon- 
Anchor ground. The Midget and Bonanza King lodes cross without any apparent 
faulting or any indication of difference in age. The Conundrum lode usually 
becomes irregular and rather indistinct as it approaches the Bonanza King lode. 
The two apparently cross without noticeable faulting, but the Conundrum lode has 
proved of very little economic importance near the Bonanza King. About 100 
feet northwest of the Midget shaft is a lode known as the Intermediate vein, w T hich 
accompanies a phonolite dike. This strikes in general N. 60° E., it and the Midget 
lode coming together near the Moon-Anchor ground. What becomes of the Midget 
lode in the Moon-Anchor mine is not clear. The principal lode of that mine, the 
Cobb vein, is associated with a phonolite dike and is apparently a direct continua¬ 
tion of the Intermediate lode of the Midget mine. The Intermediate or Cobb lode 
dips steeply northwest. The Cobb lode in the Moon-Anchor is accompanied by a 
number of other fissures in the breccia, which show a general tendency to diverge 
to the northeast. It is crossed at an acute angle by the Lead vein, which, so far as 
knowm, has not been recognized in the Midget workings, though it may be the 
Midget vein. The general strike of the Lead vein is N. 30° E., and the dip about 
70° SE. The intersection of these lodes is w r ell shown on levels 7 and 8 of the Moon- 
Anchor mine. The Lead vein, as it comes into the Cobb from the south, turns and 
follows the latter for 75 to 100 feet and then resumes its former course and contin¬ 
ues into the hanging wall of the Cobb lode. The phonolite dike, which elsewhere 
invariably accompanies the Cobb, is absent where the tw r o lodes coincide, being 
apparently faulted by the Lead fissure. 
The so-called Granite vein in the Moon-Anchor mine strikes nearly northwest 
and southeast. It is a nearly vertical, narrow zone in the breccia characterized 
by unusual abundance of granitic fragments. It was apparently a fissure in at 
least partly consolidated breccia, which became filled largely with granitic detritus. 
This filling has been mineralized with pvrite, and most of the granitic fragments 
are altered to spongy aggregates of secondary feldspar. 
CHARACTER OF ORE. 
Not. much ore could be seen in the Moon-Anchor mine at the time of visit. 
It appears to have been of the usual type—calaverite and fluorite in narrow fissures 
in breccia and phonolite—and w r as partly or w holly oxidized above levei 6. Some 
of the best ore is said to have occurred in the phonolite dike of the Cobb lode. 
