Arizona citizen., 1879-08-22
Mining District at Sullivan. Ma,os.

We have several times referred to
 the above district in the columns of
 HE CITIZEN, having two correspond
 ents in that portion of the States who
 are interested in the development of
 mines alike in Maine and Arizona.
 Our many readers will find many
 items of interest in the subioined
 paper, which was written by c. ".
 Kempton, M E.:
 The district is in Southeastern
 Maine, and extends from the town of
 Franklin through Hancock, Sullivan
 and Gouldsborough, from northwest to
 southeast, about sixteen miles. Sulli-
 van is situated at the head of French
 mans Bay, ten miles from Bar Har
 bor, Mount Desert, twelve msles from
 Ellsworth and thirty-seven miles from Bangor.
 The staple production is granite, and first impression would declare that no other kind of rock existed there, but closer examination reveals more slate than granite, and that the mineral veins of the district are found along or near their line of contact. The states of the region are quartzi- tic, of unknown age, undoubtedly very ancient, and referred to the later Lau- rentian-the limbo to which most of the doubtful New England rocks are consigned. Through these have been thrust the immense mass of granite and its allied rocks, from which action has proceeded the formation of the principal mineral deposits.
 The first discovery of silver ores here was made by Mir. 4. A. Messer, in May, 1877. They were discovered | below high water mark. on the shore of the bay, at the site now occupied by the shaft of the Sullivan mine. | The vein, when found, showed about ten inches of quartz, carrying pyrites, galena and traces of brittle silver (stephanite).
 A coffer dam was built and shaft | The first native silver threads were found about ten feet down. The vein was uncovered in several other places, also below high water mark, proving that the showing at the shaft location was the poorest yet found. Seventy-five feet from the shaft, southeasterly. the quartz is four feet wide at three feet below the beach, and the lowest assay known from this is over $20O per ton in sil- yer. The ore is principally stephan ite.
 Proceeding with the shaft, at about thirty feet depth, the vein, composed If quartz, with more or less slate highly impregnaled with sulphides, was found to be four feet wide. At I his time the shaft is 100 feet deep. I Drifts have been run sixty-two feet southeast from the seventy -tive-foOt q evel and thirty feet northwest from he eightv-hve-foot level About GOO .ons of ore are on the surface ready or concentration. The ore is essen ially silver, sulphides and native, in Iuartz and slaty gangues, with slight mounts of iron, zinc, etc, as sul- a 1hides, and also galena. g
 Of the silver minerals, stromeyerite S most plentiful, stephanite next, ar f -entite (silver glance) common, native . ilver in flakes very plenty, threads 1, requent, Jumps occasional.
 Ruby silver is exceedingly rare; an- imonial silver has been found. The Il occasional yellow copper sulphide met ? with has a peculiar luster and runs 'ery rich in silver. a
 Arsenical iron abounds, showing I .old, and giving, in some cases, an .ssay for silver. &
 Less than a year has sufficed to i, the existence of strong issure veins in this district, carrying ligh grade ores, and to give every as urance of their permanency and $ alue. The level surface of the coun- ". covered with drift gravel, makes V a slow matter. ]