448 University Geological Survey of Kansas. 
sketches drawn as nearly according to the conventional posi- 
tions of the clinographic projections as possible. 
The chemical analyses were made by Mr. Edgar B. Hayes, 
Mr. M. K. Shaler, and Mr. E. V. McCollum, with the ex- 
ception of two by the author. : 
On account of their completeness, especially in the case of 
calcite, Goldschmidt’s letters, as given in his ‘‘Index der 
Krystallformen der Mineralien’’ are used for the forms, the 
Miller and Naumann symbols of which are given. 
DESCRIPTION OF MINERALS. 
Minerals of the district arranged according to Dana’s ‘‘Sys- 
tem of Mineralogy ’’ (6th edition). An asterisk (*) indicates. 
that the mineral is new to the district. 
NATIVE ELEMENTS: SILICATES: 
* Sulphur. Calamine. 
SULPHIDES: cs Muscovite. 
Galena. * Kaolinite. 
Sphalerite. * Allophane. 
* Covellite. * Chrysocolla. 
Greenockite. PHOSPHATES: 
Wurtzite. Pyromorphite. 
Chalcopyrite. SULPHATES: 
Pyrite. Barite. 
Marcasite. Anglesite. 
OXIDES: Leadhillite. 
Quartz. * Caledonite. 
* Cuprite. * Linarite. 
* Hematite. * Gypsum. 
* Pyrolusite. Goslarite. 
Limonite. Melanterite. 
CARBONATES: ce Chaleanthite. 
Calcite. * Copiapite. 
Dolomite. HYDROCARBON COMPOUNDS: 
Smithsonite. Asphaltum. 
Cerussite. 
Malachite. 
Azurite. 
Aurichalcite. 
Hydrozincite. 
In addition to these, the following minerals have been re- 
ported from the district but have not been found by the 
