KANSAS ACADEMY OF SCIENCE. 29 



dreds of feet in length, the center sometimes containing large sheets of crys- 

 tals accompanied by barytes. These have, by some persons, been taken for 

 quartz veins, although entirely different in elementary composition. Strata 

 of chalk, ten feet in thickness, have been taken from the Niobrara. Oolite 

 is found in Johnson county ; satin spar, in Cherokee county and at the Great 

 Spirit spring ; stalactite, in the caves at the southeastern part of Cherokee 

 county, with stalagmite. 



9. Dolomite, in rhombic crystals, occurs in the subcarboniferous, in Cher- 

 okee county. Magnesian limestone, in strata four or five feet thick, in the 

 hills west of Lawrence, and near Fort Scott, but most of the limestone in the 

 State called magnesian is not, but is carbonate of lime. 



10. Iron Pyrites is found in almost every part of the State. Spathic iron, 

 hematite and oxid of iron are not uncommon, but in too small quantities to 

 be of market value. 



11. Barytes, or Heavy Spar, in fine crystals, is found in Wallace county — 

 the best near Sheridan station; also in Ellis, Nemaha, Ness and Brown 

 counties. The latter is in beautiful fiat crystals, of a light pink color. 



12. Zinc Blende, with cerussite and calamine, furnishes fine crystals in a 

 variety of forms and colors, from the mines of Cherokee county. Some 

 specimens equal in beauty any from Europe. 



13. 14, 15. Mica, Feldspar and Hornblende are not found in situ in Kansas, 

 and only occur in the drift, and all are in small, inferior specimens. 



16. Spinel Ruby was obtained by the writer, in the northern part of Riley 

 county, in a stratum of fine clay shale. The crystals were small and full 

 of fractures, rendering them unfit for jewelry. One was shown me, said to 

 have been found near Milford, which was one-third of an inch across, and of 

 clear, fine grain, which would make a lovely ornament. 



17. Manganese, in the form of dendrites or "forest rock," is common from 

 all parts of the limestone deposits. 



18. Quartz cannot be considered common in the State, but small crystals 

 are found in every county covered by the carboniferous deposits. They 

 sometimes occur as small geodes, and occasionally line the cavities of fossils. 

 Chert is common in some of the lime strata, and in such cases follow the 

 beds across the State. Agate, carnelian, chalcedony and jasper are found oc- 

 casionally in the sand-bars of our streams, and belong to our drift deposits. 

 Amethyst in fine crystals is found in the small area covered by the metamor- 

 phic rocks of Woodson county. 



19. Silver, but in only a few ounces to the ton, has been discovered at the 

 lead mines. It has never been obtained except in such connection. 



20. Copper only occurs in very small quantities with iron pyrites. 



21. 22. For Lead and Zinc, see Geological article, in Agricultural Report. 



