Pyrite and marcasite intergrowths from Northern Illinois.

From: The Mineralogical Record | Date: March 1, 1995| Author: | Copyright information

Three quarries in Northern Illinois yielded microcrystals composed of marcasite, pyrite, calcite, chalcopyrite, dolomite and goethite. The pyrite-marcasite integrowths has mostly bar- and chain-like morphologies. From studies of the morphologies, researchers hypothesized that the marcasite crystals were first formed in an elongated shaped followed by succeeding generations of marcasite and pyrite growth.

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 ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Weird things from the middle Ordovician of North America interpreted as conulariid fragments
; SMALL PHOSPHATIC fossils recovered from acid residues of the Galena Group Middle (Ordovician) of Wisconsin were recently described...specimens referred to by Clark et al. (1999) are from the Galena Group of Wisconsin, and are inferred to be nearly coeval with specimens...
Daley allies invest in casino // Critics call Galena gambling a `trial spin' for Chicago move
; ...gambling in the Galena area, said the boat to be used by the Galena group "looks like it would be more comfortable at Chicago's Navy...agreement through which the Chicago group replaced 14 of the Galena group's investors and agreed to inject millions of dollars into...
A new pleurocystitid rhombiferan enchinoderm from the Middle Ordovician Galena Group of northern Iowa and southern Minnesota
; ABSTRACT-Pleurocystites strimplei new species, from the Galena Group of Iowa and Minnesota, is closely related to P. squamosus Billings from the Appalachians and Michigan. Numerous specimens provide...
Galena; Group to hold networking luncheon
; The Professional Women's Initiative of Galena will hold its second networking luncheon for women from Jo Daviess County on Wednesday. The event will be held from 11:30 a.m. to 1 p.m. at the Ramada in Galena. Cost is $11 for members and $16 for nonmembers. Pam Hillary, owner of Kneading Minds, will
Top playwright highlights show; 'Ballad Hunter': Galena group happy to have Laird on hand
; 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
Street Work; Galena group evolved in its 20 years
; GALENA, Ill. - Main Street Players was born 20 years ago as a business venture among theatrical friends and evolved into a nonprofit organization that has functioned another 10 years without its birth parents. "There were four of us," co-founder Carole Sullivan said. "In 1986, the DeSoto House was
'Charlie Brown' performance planned by Galena group
; News You Can Use What: "You're A Good Man, Charlie Brown," musical Who: Galena Art Theatre When: 7:30 p.m. June 1, 2, 7, 8 and 9 Where: Turner Hall, 115 S. Bench St., Galena, Ill. Cost: $10 general admission, $7 seniors, students and children GALENA, Ill. - Judy Tippett, a librarian for the
Joseph and his colors; Popular musical will be peformed by Galena group
; GALENA, Ill. -"It was red and yellow and green and brown and scarlet and black and ochre and peach," not to mention 21 other colors that the cast of 63 has had to memorize in the correct order. That's the description of the title object - the famous coat of many colors - from "Joseph and the
Galena group wants tribute to Grant slaves; Bricks at site of Julia Dent Grant statue will honor her 4 slaves; Galena
; GALENA, Ill. - Lest We Forget, a grassroots effort in Galena, is under way to collect $1,500 to purchase four paver bricks in tribute to the four slaves owned by former first lady Julia Dent Grant. A $110,000 bronze statue of Grant is expected to be unveiled Aug. 12 in Galena, just a few hundred
Galena group sprinkles stage with "Rainmaker"; Nash play likened to a 'Fairy tale on the Prairie'
; GALENA, Ill. - Directing the Galena Art Theatre production of "The Rainmaker" is a dream come true for Chris Ludescher. The 1956 film, which starred Burt Lancaster and Katherine Hepburn, was one of his favorite movies, he said. When Ludescher was a student at Dubuque Wahlert High School, he had the