prospect pit

prospect pit

[′prä‚spekt ‚pit]
(mining engineering)
A pit excavated for the purpose of prospecting mineral-bearing ground.
References in periodicals archive ?
The company has recently completed a shallow prospect pit into this kimberlite pipe.
Based upon preliminary field work to date, the mesothermal veins are consistently gold bearing and are indicated to have excellent vertical continuity for at least 400 meters as evidenced by prospect pits and scattered outcrops separated by thin soil cover.
Continuing north for a further 300 meters is a 75 to 100 meter wide exposure of sheared and brecciated rocks with a lot of old surface workings and prospect pits.
At Lodi Hills, in northern Nye County, a reconnaissance rock-chip sampling program, in an area of hydrothermal alteration and old prospect pits, has outlined a zone of approximately 900 metres by 750 metres with anomalously high geochemical values of gold and silver.
275 Oxidized "BIF" with moderate limonite in old prospect pits approximately 800 feet west of SC 5 and 2,400 feet north-northwest of SC 1.
Numerous old prospect pits are present along the 3,000 ft-long, east-west-trending gold anomaly.
The zone contains conspicuous blue copper minerals in road cuts, float, and old prospect pits.
2 ppm Au, based on more than 900 surface samples including trenches, prospect pits and road cuts.
The property may have been prospected as early as the 1870's during the Utah Camp and Cortez boom, and it contains numerous prospect pits and shallow adits.
This latter anomaly occurs in an area that has seen very little historic garimpeiro activity, but does contain a few small prospect pits and shafts.
The target is in an area of hydrothermal alteration, prospect pits and dumps and placer gold showings.
The vein appears to be about 3 feet thick and is exposed in some old prospect pits for 400 feet of strike length.