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The Mineralogical Record articles from July 1998
A bimonthly magazine for mineral enthusiasts and collectors. Articles discuss mineral localities, mining and mineral histories, collection reviews, and market reports.
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The Mineralogical Record archives from July 1998
The Sweet Home mine, 1873-1989.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... As silver mines go, the Sweet Home mine was a failure. It was a hole in the ground that devoured hopes and money, and gave very little in return. Based solely on its unimpressive silver output, the Sweet Home should have faded into obscurity...
New operations at Sweet Home mine: 1990-1997.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... INTRODUCTION
There they were, looming, straight up and all out-of-scale, amazingly beautiful, and almost intimidating: the "Alma King" and "Alma Rose" rhodochrosite specimens from the Sweet Home mine in their exhibit case at the Tucson Gem...
Geology of the Sweet Home mine and Alma district.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... GENERAL GEOLOGY
The Alma mining district lies along the eastern slope of the northern portion of the Mosquito Range near the small town of Alma, in Central Colorado. The district has a long history of gold, silver, lead, copper and zinc...
Minerals of the Sweet Home mine.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... INTRODUCTION
This article describes the minerals from the Sweet Home mine, with emphasis on the crystallized specimens discovered during mining operations between 1991 and 1996. For details on electron microprobe analysis, petrographic...
Sweet home rhodochrosite - what makes it so cherry red?(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... Over the past 100 years the Sweet Home mine has produced rhodochrosite of extraordinary beauty; it is unrivaled in its striking color relative to rhodochrosite from any other locality in the world. Several articles have been written describing...
Ancient fluids at the Sweet Home mine.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... INTRODUCTION
Geologists study mineral deposits in the hope of discovering nature's secret methods of ore formation. Such knowledge is then put to use in exploration for mineral concentrations that can be mined at a profit. For nature to...
Crystal chemistry of minerals from the Sweet Home mine.(The Sweet Home Mines, Park County, Colorado)
July 1, 1998... INTRODUCTION
The Sweet Home mine is known to most collectors today for its gemmy red rhodochrosite. However, ask what else comes from the Sweet Home mine and, at best, the answer might be pyrite, fluorite and quartz; few people know of the...
The application of ground-penetrating radar to mineral specimen mining.(The Sweet Home Mine, Park County, Colorado)
July 1, 1998... INTRODUCTION
In the summers of 1993 and 1994, a new approach to explore for crystal cavities was tested: it involved the use of ground-penetrating radar, or GPR for short. GPR is similar in many respects to sonar and seismic methods, and...