oww.] MANITOU. 433 



and clear), topaz, plienacite, kaolinite, arfvedsonite, astrophyllite, 

 hematite, limonite (pscudomorph after siderite), goethite, turgite, cas- 

 siterite, rutile, zircon, rluorite, cryolite, paclmolite, thomsenolite, geark- 

 sutite, ralstonite, prosopite, elpasolite, tysonite, bastniisite, allanite, 

 xenotime, gadolinite, samarskite. 76 



A large number of minerals, including all the fluorides, zircon, astro- 

 phyllite, and arfvedsonite, occur near St. Peters dome, 10 miles (1G km.) 

 southeast of Pikes Peak. This locality is reached by carriage from Col- 

 orado Springs, a full day being necessary for the trip. The same road 

 leads to the Seven lakes at the south base of Pikes Peak, and along its 

 course line mountain views are obtained at many places. 



Other points at which fine specimens have been found are scattered 

 all over the foothills of Pikes Peak, but only at St. Peters dome will 

 tin- casual visitor be likely to find valuable specimens himself. A fine 

 collection of minerals for sale can be found at the Iron Spring in Bux- 

 ton creek, below the depot of the Pikes Peak railroad. 



The locality which has furnishd the finest aniazonstone crystals, and 

 also plienacite and topaz, is near Florissant, a station on the Colorado 

 Midland railroad, 30 miles (48 km.) from Manitou and 15 miles (2-1 km.) 

 northwest of Pikes Peak. Pine topaz crystals have also been obtained 

 at Devils Head (Platte mountain), 30 miles to the northwest. 



In the vicinity of the village of Florissant is the small isolated lake 

 basin of Upper Eocene (Oligocene) beds, which have become celebrated 

 for their wonderful insect fauna and fossil Mora. Fishes and, more 

 rarely, birds have also been found here. The strata of this deposit are 

 composed of volcanic ashes, and they can not as yet be accurately cor- 

 related with any beds known elsewhere. The geology of the basin has 

 been described by S. H. Scudder. 77 

 •151 ge 28 



