90 The Americaji Geologist. February, 1900 
the neighboring portions of the coimtry-rock is only to a very 
slight degree auriferous. 
The Hardscrabble. — A 350-foot belt of liornblende schist along the 
Keating fault in the Upper Cofifee creek district, has been crushed 
by the shearing of the rocks, and mineralized by percolating waters. 
The crushed schist is heavily stained with iron in places, abounds in 
auriferous ochre seams and bunches, and is seamed with veins and 
veinlets of bluish-gray granular quartz. The quartz carries free gold 
to the extent of $10 to $50 per ton, but the ochre seams are richer. 
In places, there is gold disseminated through the broken schist to 
values of $5 to $10 per ton. Wherever the faulting is most appar- 
ent, the gold is most concentrated. The veinlets of quartz increase 
in value toward the serpentine and the richest appears to be in the 
very contact-plane. 
At another place on the same claim, a large white dike of quartz- 
porphyryte contains oxide of manganese in cracks and cavities, and 
carries gold throughout it to the extent of making it a milling ore. 
On the east side of the dike, faulting has crushed the schist into 
gouges which, in places, contain bunches or "pockets" of extraor- 
dinarily rich ore, some going $6,000 per ton. There is gold in con- 
nection with this Keating fault along the entire length of this 1,500- 
foot claim, and the same auriferous formations extend north on to the 
Westonia location, and south along the faulted belt a distance of at 
least a mile and a half. 
The Mocha-Java. -^Xvi the serpentine, a short distance east of the 
Keating fault is a north-south dike of fine-grained, greenish-gray 
rock, apparently a diabase. Accompanying it is a dike of quartz- 
porphyryte, of white color and a close resemblance to certain quartz 
veins. Both dikes carry free gold, especially the diabase, assaying 
to the value of $250 per ton, and in hand specimens displaying par- 
ticles easily seen with the unaided eye. 
The Forest Queen. — Two miles north of Coffee creek, the large dike 
of granite-porphyry which accompanies the Lawrence fault, is cut 
by an east-west vein of white ribbon quartz, i6>4 feet wide, carrying 
free gold to an average value of $8 or $10 per ton. About one-half 
mile farther south on the same dike, a recent discovery indicates that 
the granite-porphyry contains a high value in gold disseminated 
through it from one side to the other of the dike. There is here no 
vein-quartz. Still farther south on this same Lawrence fault, shear- 
ing has crushed the serpentine and schists along the dike of granite- 
porphyry, and percolating waters have richly supplied with gold both 
crushed country-rock and veinlets of ribbon quartz, formed in irregu- 
lar fissures. 
The Gold Bug. — This is one of several parallel veins, including the 
Golden Eagle location, the Klondike and Hamlet's Ghost, having a 
course northeast to southwest, and cutting hornblende schist and 
grano-dioryte. They are 6-inch to 3-foot veins of white ribbon quartz 
