|
|
Article: Pyrite and marcasite intergrowths from Northern Illinois.
- Article from:
- The Mineralogical Record
- Article date:
- March 1, 1995
- Author:
CopyrightCOPYRIGHT 1995 The Mineralogical, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
Excellent microcrystals of pyrite and marcasite are found in vugs in Ordovician limestone at several quarries in northern Illinois. The crystals include pyrite "bars" and marcasite blades which are epitactic on early-formed marcasite whisker crystals.
INTRODUCTION
Three quarries in northern Illinois [ILLUSTRATION FOR FIGURE 1 OMITTED] have produced very similar microcrystals of marcasite and pyrite from rocks of the middle Ordovician Galena Group. The Irene quarry of the Rockford Sand and Gravel Company has provided the majority of the specimens described in this paper; it is located 2 miles north of Irene, Boone County, Illinois in the NW 1/4 of Section 9, ...
Related newspaper, magazine, and journal articles:
|
|
Article: Top playwright highlights show; 'Ballad Hunter': Galena ...
Telegraph - Herald (Dubuque);
April 4, 2002 ;
700+ words
...GALENA, Ill. - One audience will be able to talk back to the playwright when the Main Street Players Theatre Co. produces "The Ballad Hunter." The drama, by Illinois playwright Jennifer Laird, will open April 11 at the Sinsinawa Mound (Wis.) Theatre. The talk- back session is scheduled for April
|
|