lis Mr. William Phillips on the Veins of Cornwall, 



is often termed a sparry loau. Quartz is sometimes called hard spar 

 by the Cornish miner, and fluate of lime, sugary spar. 



If iron pyrites abound, the load is said to be mundicky^ and when 

 this occurs at a shallow level it is not always unpromising : even if 

 it continue in depth, and be somewhat compact, particularly if 

 mingled with portions of yellow copper ore, there are many in- 

 stances of such veins proving rich beneath. No distinction is made 

 by the miner between iron pyrites and arsenical pyrites. The latter 

 is however rarely very abundant. 



A vein that contains a great proportion of chlorite is termed a 

 peachy load : it promises for tin rather than copper, which is rarely 

 accompanied by chlorite. Tin was found in it, in Pednandrae, 

 Polgooth, Relistian, Huel Unity, and in many other mines. I have 

 specimens of the yellow copper ore in chlorite from Relistian and 

 from the Wherry mine, the workings of which were under the sea 

 in Mounts' Bay. 



A vein is said to be Jlucany when either one or both its sides, or 

 walls, are lined with a whitish or bluish clayey substance, or when 

 this substance is interspersed through the vein itself. Flucan in 

 some few instances has abounded so greatly, that it has been difficult 

 to prevent its running in upon the miner in working the mine. 

 This was the case in the early working of the productive copper 

 mine called Huel Alfred, as is noticed in the annexed description 

 of some of its veins. 



When tin ore is intimately mingled with quartz and chlorite, 

 the vein is termed a scovan load, which is of a dark brown or of 

 a greenish hue, but not very hard, or compact. A load of this 

 description rarely exceeds 12 or 14 inches in width, but it some- 

 times occurs in a vein the contents of which are not solid, thence 

 by the miners termed a sucked stone, A load so circumstanced is 

 often several feet wide. 



