MINERALOGY. 279 



only from the Kirgheez Steppes, has been identified with other 

 copper minerals from Peru. The few localities of diaspore 

 have been increased by the addition of Jordansmiihl, Silesia, 

 where it is found in a rock consisting mostly of a massive 

 garnet ; it is said to resemble closely the American mineral. 

 The zinc arsenate adamite, previously known only from Cha- 

 narcillo, Chili, has been found in considerable quantities and 

 in beautiful crystals at the mines of Laurium, Greece. A very 

 large number of new occurrences could be added to those 

 here mentioned. 



In this country the discovery of large corundum crystals 

 by Mr. Joseph Willcox, at a new locality in South Carolina, 

 deserves to be mentioned. A new locality of more than or- 

 dinary interest has been described by Brush and Dana at 

 Branchville, Fairfield County, Conn. A vein of albitic gran- 

 ite at that place has afforded a large number of new minerals, 

 seven in all, and also some rare known species. The new 

 minerals are mentioned in the list below ; they are all man- 

 ganesian phosphates, but differ most widely in composition 

 and crystalline form, not only among themselves, but also 

 from other known species. They are, moreover, all original 

 minerals of the vein, and none of them products of decompo- 

 sition. They are found associated, in the most intimate man- 

 ner, in nests imbedded in the albite. In addition to the seven 

 new species, some of the other minerals identified are: first, 

 those associated with the phosphates, rhodochrosite, amblygo- 

 nite, apatite, vivianite; also uraninite or pitchblende, gum- 

 mite, uranium mica, etc. ; also independent in the vein are 

 spodumene, cymatolite,killinite, microcline, and also microlite 

 in octahedral crystals, columbite, tourmaline, staurolite, and 

 others. The vein was worked formerly on a small scale, for 

 the sake of the mica it contains, but the interest connected 

 with the new minerals discovered has led to its beino- re- 

 opened. 



NEW SPECIES. 



The following list contains brief descriptions of the recent- 

 ly discovered new species. They are arranged, for conven- 

 ience of reference, in alphabetical order: 



Argyropyrite. A sulphide of silver and iron, containing 

 these metals in a slightly different proportion from that in 

 which they exist, in sternbergite. It is properly only a vari- 



