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Article: Bournonite: Yaogangxian Mine, Chenzhou, Hunan Province, China.(Connoisseur's Choice)
- Article from:
- Rocks & Minerals
- Article date:
- January 1, 2005
- Author:
CopyrightCOPYRIGHT 2005 Heldref Publications. 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)
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There are certain mineral species that collectors either consciously or subconsciously use as a measure of the quality and sophistication of whatever collection they are viewing. The number, size, and perfection of flashy minerals such as wulfenite, rhodochrosite, and azurite coupled with their localities can be used to gauge dollars spent and perhaps the age of the collection. However, there are other minerals that in fine specimens, although periodically available at some typically elevated price, elude most collectors and yet can be the very hallmark by which a collection is judged. A good example is proustite. Another might be bournonite, a sulfosalt well known for ...
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Article: Connoisseur's choice: rutile: Graves Mountain, Lincoln County, ...
Rocks & Minerals;
March 1, 2003 ;
700+ words
... ... has been reported from many localities in the northeastern United States. V-twinned black rutile crystals to 2 cm across are reported ... including thumb-sized crystals from Leyden, complexly twinned crystals to 4 cm from Williamsburg, 2.5-cm-thick twins from ...
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