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Un des symboies suivants apparaitra sur la dernidre image de cheque microfiche, selon le cas: le symbols — *- signifie "A SUIVRE ", le symbole V signifie "FIN". Maps, plates, charts, etc., may be filmed at different reduction ratios. These too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The following diagrams illustrate the method: Les cartes, planches, tableaux, etc., peuvent dtre filmds d des taux de reduction diffdrents. Lorsque le document est trop grand pour dtre reproduit en un seui clich6, il est filmd d partir de I'angle sup6rieur gauche, de gauche d droite, et de haut en bas, en prenant le nambre d'images ndcessaire. Les diagrammes suivants illustrent la mdthode. 1 2 3 1 2 3 4 5 6 REPORT OP COLONEL G. H. GRATIOT, ON THE REAR PORTION OF TIIH RYAN LOCATION, AT MAMAI^rSE. Edward Ryan, Esq. Sir, I bcp^ leave to submit to you the follow- ing, us the result of my exaruinations of the Veirs situa:ed in the interior upon the E. Ryan Location at Mamainse, North East Shore of Lake Superior. VEIN No. 1 Will be found at tlie termination rf the trail, entering the interior at the cab.:i, upon the Lake Shore, at a distance of about two miles from the Coast. It occurs in Trap with a Veinstone of Amygdaloid and Calcareous Spar intermixed, embracing a width between the outer walls of eight fccL. It v.-aa first observed to outcrop upon the western extremity of a ridge or elevation of rock some thirty feet above the general surface, and was seen to pursue a course parallel with tlie ridge, with a bearing of S. 44" I']. A shaft hns been sunk on this Vein to tlie depth of six feet, the Vein at this depth being ascertained to retain its width from the surface dimensions, and to be decidedly iMetalliferous, prodncing promising specimens of the Grey and Yellow Sulphuiwt^ of Copper. VEIN No. 2 Occurs about one fourth of a mile in a nor- therly direction from Vein No, 1, in a per- pendicular cliff of Green«^tone Trap of twenty feet, having a course of S. 40" E. It was ob- Bcrved to boldly enter the cliff ik "ly at right angles to the face of the knob; it is composed of Calcareous Spar with lines of Quartz; where it first makes its appearance upon the brow of A 2 the cliff it only exposes a width of a few inches, but u[)on remuving the detached soil and rock Avhich had acciiumlated at the base, it was seen to present a -very favorable ap- pearance having increased in dimensions in its descent, showing at a depth of ten feet from the surface a Avell dehned width of three feet; the latter fact sliould j)ro})t:rly be considered as a favorable indication reii(l"i'ing it conclu- sive that it should be regarded as a true and promising Vein. XEl'S No. 3 Makes its appearance in a knob of Greenstone Trap elevated about lifty feet above the gene- ral surface, and situated some half mile south- erly from Vein No. 1 ; the Veinstone is made lip of Calcareous Spar aiid (Quartz;, the former predominating and presenting an exceedingly well defined width of three feet. Tiie course of this \'ein is very nearly parallel with those befcre mentioned, being S. E. and N. AV. or S. 45" E. ; adjoining the north Avail rock the Vein is principally Quartz, while the middle and south portion is composed of small bunches and zig-zag A'eins of Calcareous Spar, the latter iiTC'gularly crossing the surface of the Vein. Carbonate of Copper was ascertained to exist in this Vein under favorable circumstances; the wall rocks are perfiH-t. This: be regarded as decidedly promising X'^oln aliould VEIN No. 4 Has a width of two feet, and a course o'" S. 70° E. with a Veinstone similar to the above mentioned V^eins, having j>romiscuously (Quartz and Calcareous Spar; it is foimd separated by a distance of some half mile in a southerly direction, on an uplift of Ti'appean rocks ele- vated about thirty feet. The Xqiw was ob- served to pursue a course parallel with the course of the cliff it occurred in, beintj dis- tinctly marked by a small dell or depression in the surface, and was found to produce, im- mediately upon the surface, exceedingly rich and promising specimens of the Yellow Sul- phurattl and Carbonate of Copper. The position of these Veins in the interior was observed to correspond in the main with many of those upon tht: coast. So great is 3 the identity, under certain circumstances, as to lead to the presumption that they are continuous ^'eins of some of the Veins out- cro[)pin;x upon tlie Lake Coast. This 1 con- ceive to he a very important fact Avhich being conehiisivelv settled, fuUv establishes the fact of the value of tliis Location, and affords additional assurance of its ini[)ortance. Those Veins oeeuniug- innnediately u[)on the coast of the Lake, cannot be regarded of nuich im- portanee unless they should be traced inland, and their j)osilion be determined in the more elevated lands in the; rear. The inm-essof the water iVoni the Jviike -svill be a serious diffi- culty to be encountered in sinking of shafts adjacent to the coast. South and nortli of Vein No. 4, we disco- vered ('?////f \'eins varying in width from eight inches to fi^■e feet, and all carrying Grey 8ul- phumt^, Yellow ,'^ul[)huret|^ and Xative Cop- per; owing to our limited time we could do no work on those ^'eins. ■ VEIKS 13, 14, & 15 Situated in the bed of a small stream about three miles from the co-ist. A^ein 13 is one foot wide, A'ein Stone, Calcareous Spar and Quartz, eaiTyingthe Grey Sulphurfttlof Cop- per. A'ein 14 is one and a half feet In width, Vein Stone, Cak.reous Spar and Quartz, carrying the Grey Sulphuittt^. Vein 15 is three feet wide and about one and u half miles from >'ein 13, in a north dir etion. Veinstone, Calcai-eous Spar and (Quartz carrying Grey and Yellow Sul])hui«.taof Copper; thc^course of these N'eins is very nearly paralkd with those before mentionccl, being S. 45" E. The Veins previously mentioned and desig- nated by niunbers, are separated from the Lake by a distance of from two to three miles, and Avhen seen at the surface are elevated froni four to iive hundred feet above the level of the Lake ; to certain extent spontaneous drainage can be efi'ected in their further de- velopment. In one instance the ore was ascertained to exist as abundant and as promi>inir upon the surlace of the Vein inland, as of those taken from the shore of the Lake. The experience of centuries iias taught us that in Copper I mm^ ■ Veins the deeper -vvo go tlie richer the ore. Why is it not fair to suppose that tiie same quality of ore will be found at the depth of one hundred feet I'rom the surface in the former thai will app..'ar in the latter, although the one in reality is elevated four hundred feet above the other. The wall rocks of the Veins described, as far as my observation extended, were found to have .i lirni, couipactbase; it is accordingly believed but little dilU/.ulty will be encountered from the liow of surface water. Daring the exploration of the interior, several less perfect Veins were discovered in- dependenL of those separately mentioned, and it is believed a more minute examination will lead to the discovery of others as important as those already seen. The conntry rises rn])idly as you recede from the Lake Coast, attaining an altitude of pro- bably three hundred and fifty feet in one mile' distance. The hill side fronting the Lake has a thin soil, barely sufficient to con- ceal the Trap Rocks undei-laying, supporting an inferior growth of principally evergreens and birch. From the summit of the first row of hills, still further inhmd, thn rountiy hsis n, moro gradual ascent, and is characterized by the frequent occurrence of insulated knobs of Trap having an elevation of from thirty to eighty feet above the general level. The soil is more fertile and will be found to sustain an exceedingly handsome and thrifty growth of sugar maple tind)er, abundantly sufficient to render it expedient to smelt the ore upon the ground, thereby avoiding a very important item to be deducted from the profits of mining, which occurs when it has been found necesary to transport the Ore to fuel. The country retains the same interesting appearance to the eastern boundary of the Location; the Location is divided in the rear by a considerable sized stream, amply suffi- cient for any water power required in mining or smelting. Respectfully your obedient servant, C. H. GRATIOT. i mn^ i 1