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A plethora of P's

Article Abstract:

P gem minerals, such as purpurite, are known for their uniqueness and attractiveness. Purpurite is a secondary phosphate that blends with cabochons and carvings when turned into a gemstone. Pyrrhotite is a bronze-colored pyrite counterpart that is hexagonal.

Author: Pough, Frederick H.

Publisher: Lapidary Journal Inc.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1997

Varieties, Minerals, Minerals (Geology), Precious stones

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Scheelite tales

Article Abstract:

Scheelite is a major ore of tungsten with the mineral wolframite. Scheelite is among the stones of the obscurely acknowledged Pough collection given to the Carnegie Museum in Pittsburgh.

Author: Pough, Frederick H.

Publisher: Lapidary Journal Inc.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 2001

United States, Science & research, All Other Metal Ore Mining, Ferroalloy ores, except vanadium, Tungsten Ores, Research, Collections and collecting

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