464 



Scientific Intelligence. 



account of the minerals thus far produced in a region which is 

 unusually rich in variety and number of species, some of them of 

 great rarity elsewhere. 



12. Notes on a recent find of Zincite Crystals ; by A. H. 

 Phillips.— During the past year a small stringer containing 

 well crystallized and separate crystals of zincite was discovered 

 in the Franklin Furnace mine. The vein, one-half inch in aver- 

 age width, was surrounded by the ordinary mixture of frank- 

 linite in a matrix of green willemite. Associated with the zincite 

 are crystals of leucophoenicite, pyrochroite,* gageite, calcite and a 

 very soft fibrous asbestos. The best crystals, fourteen of which 

 are in the Princeton collection, the largest measuring 3 - 5 cm along 

 its pyramid edge, were imbedded in this fibrous material, though 

 some were broken out of the massive zincite. All the large crys- 

 tals are apparently flattened, hexagonal pyramids. This apparent 

 distortion is caused by the pyramid faces of one side being very 

 short as compared to those of the opposite side of the crystal. 

 The faces are rough, pitted, and generally crossed by two sets of 



Fig. 1. 



Fig. 2. 



Fig. 1. Zincite crystal showing striations and general termination. Nat. 

 size. 



Fig. 2, Crystal in the matrix showing the upper base. Enlarged %% 

 diameters. 



striations ; one parallel to the intersection of the pyramid and 

 prism, the other parallel to the pyramid edge and caused by a 

 parallel growth of the pyramid itself. This is so marked in one 

 individual as to obliterate the pyramid edges and the crystal is 

 then rounded and conical. 



Forms. — While accurate measurements, owing to the imperfec- 

 tions of the faces, were impossible, they were, however, sufficiently 

 accurate as to identify without doubt the crystal forms. All the 



* This pyrochroite is of new habit and it is hoped to publish a note on it 

 in the future. 



