The Stamford Hill Mine
Circa 1850-63
No Previous Production, No Modern Exploration, No Problem!
Historical resource 500,000 tons @ 5% Cu 15 ounces per ton Gold reported

             Historical Underground Mines

    The current cycle of demand for minerals, combined with
    concerns regarding the environment and land use which
    are now an integral part of open-pit mine development, have
    resulted in an economic situation where vein deposits
    exploitable by underground mining methods are increasingly
    viable exploration targets. Folk NI 43101

                               























        


            STAMFORD Hill PROSPECT HISTORY

    The Stamford Hill Prospect is akin to the Charing Cross
    Prospect in that it was extensively explored during the mineral
    boom of the 1850's. Physically the Stamford Hill Prospect is
    located only three quarters of a mile north of the Charing
    Cross workings and their histories are somewhat similar.

    In fact, at one time there was consideration given to linking the
    two prospects underground and working both properties
    from the lower elevation of the Charing Cross site. See diagram
    at top right.  

    The Stamford Hill Prospect was explored by the Clarendon
    Consolidated Copper Mining Company of Jamaica which began
    work in 1852-53 having an initial capitalization of 80,000 pounds
    sterling. Operations continued until 1863 during which time the
    company initially excavated three access adits for a minimum
    of 540 feet and subsequently sank an access shaft to a depth
    of 102 fms. (622 feet) out of a target depth of 128 fms. (780 feet).

    The latter depth was never reached due to a combination of a
    number of events, namely, death of the mine captain, failure of
    pumps, inadequacy of the engine to reach the target depth and
    a lack of sufficient capital to remedy all the above problems.
    However, during the coarse of work on the Stamford Hill site,
    the company opened eight levels at roughly 75 foot intervals,
    carried out extensive drifting and raising on these levels, and
    erected all the necessary infrastructure to support the mining
    activity, including the clearing of a 4 mile road over
    mountainous terrain between the mine site and the village of
    Retreat where an ore dressing facility was established.

    The main vein, "Stamford Hill Vein", appears to have been
    continuous through a distance of 648 feet from surface to the
    bottom of the shaft and to the 480 foot level, at least, was a
    consistent 20 feet in width. Mineralization seems to have
    occurred in a disseminated fashion throughout the vein, a
    feature not considered favorable at the time. The overall grade
    is difficult to establish from the accounts available save to say
    that it appears to have been in the range of 15% copper,
    although in areas where mineralization assumed a more
    massive character, which occurred on the 46 level, values up
    to 25% are reported.

    Those comments regarding ore grade do seem to be
    consistent in that the overall grade was less than the adjoining
    Charing Cross mine where grades were in the 15-20% copper
    range. At the time, it was considered that grades would need
    to be in the 8% copper range to compete with the Cornish
    mines and bear the additional shipping cost from Jamaica to
    England for processing.
Stamford Hill Mine Shaft & Tunnel
Diagram
1st Adit Level Photos 2008
click here
Stamford Hill Mine Survey Report 2008 JCO
Stamford Hill-Charing Cross Mine Diagram
Click to enlarge
Stamford Hill Mine Shaft & Tunnel
Diagram  Clarendon 2008
Sawkins Report on Gold in Jamaica
    Gold. - This precious metal was found associated
    with some of the oxidized copper ores (blue and
    green carbonates) of the Clarendon mines, as
    stated in reports of assays made in England. These
    mines were visited by the surveyors for the purpose
    of examining into the occurrence of these auriferous
    minerals. The officer in charge pointed out No. 1,
    shaft as the locality which had produced the
    carbonates and surface ores in question.

    The relative richness was stated to amount to “15
    ounces" per ton; a very large yield indeed. But the
    correctness of this assertion may perhaps be
    corroborated from the tradition of the Spaniards
    having obtained gold here, and from their having
    named an adjacent elevation “The Gold Mine”. At the
    time of the visit of the surveyors it was impossible to
    prosecute any mineral or geological researches as
    the workings were long abandoned and the vicinity
    completely grown over by bush.  Sawkins 1869.
The Clarendon mines at Charing Cross and
Stamford Hill afford a nearer approach to true lodes
or mineral veins than any of the other metalliferous
deposits of Jamaica.  Without being contained in
mechanical fissures, still the deposits are bounded
by definite walls and characterized by distinct
gangue and ribs of ore. The width of the veins
sometimes attains 16 inches, and they seem to
occupy definite zones of lines of weakness in the
porphyry, which is the containing rock. Whether
these zones are due to fracture of merely to a
divisional structure of the rock is uncertain, but we
incline to the latter supposition.

Where the copper ores approach the surface
sulpherets are converted by the action of surface
water into blue or green carbonates and intimately
mingled with gold disseminated in small grains and
threads. From the ignorance of the parties
conduction the labours of the mine at the period
these ores were taken from it, the gold was
regarded as pyrites, and as the carbonates of
copper were considered of too low a percentage to
bear the expense of exportation, they were thrown
among the debris of the mine into a deep gully, and
when the geologist visited these mines in February
and April 1865, they found the lower adit the only
one in a state to inspect, the upper shafts and
levels had run together, and the weeds and bushes
grown over their entrances. Sawkins 1869.
Above Left:
Stamford Hill Mine Shaft & Tunnel
Diagram with recent assays from
samples collected  by Clarendon
2008 Photo taken from Calabash
Ridge.

Above Right:
Stamford Hill vein with proposed
drill locations and directions STC

Left:  
Rich Messenger
BSc,  MRes FGS  
examines  rock  found in gully  
outside of 1st adit level July
2009.
Fire assay resulted in 2.5 g/t Au,
8.2% Cu,  14 ppm Ag
Clarendon
Consolidated Minerals Ltd.
Jamaica West Indies  
N18 02.470 W77 10.686
Fully permitted for all aspects of mineral exploration.
High Grade Copper, Gold and Silver 15 miles from Port
Read full report Geology of Jamaica 1869
Gold Pg 34, Copper pg. 34 & 189 google books
Clarendon Consolidated Minerals Ltd. a Private Illinois Corporation. 2009 All Rights Reserved.
Mine Expedition Videos 2008
click here
Stamford Hill Mine Report Brewster 1991