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.
Publisher: Lapidary Journal Inc.
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1997
Varieties, Minerals, Minerals (Geology), Precious stones
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 1997
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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.
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
Publication Name: Lapidary Journal
Subject: Hobbies and crafts
ISSN: 0023-8457
Year: 2001
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