The Crystal Circle
Specimen: Standard Gallery: Standard
Zoisite Var. Tanzanite
Zoisite Var. Tanzanite
Arusha, Merelani, Tanzania
Corundum Var. Sapphire
Corundum Var. Sapphire
Balangoda, near Ratnapura, Sabaragamuwa Province, Sri Lanka
Spinel (rough and cut)
Spinel (rough and cut)
Mogok, Sagaing District, Mandalay Division, Burma (Myanmar)
Wulfenite
Wulfenite
Wulfenite from Villa Ahumada, Sierra de Los Lamentos, Chihuahua, Mexico
Apophyllite with Scolecite
Apophyllite with Scolecite
Jalisgoan, near Jalgoan, Maharashtra State, India
Danburite rough and cut
Danburite rough and cut
San Luis Potosi, Mexico
Quartz with 4-phase petroleum inclusions

Quartz with 4-phase petroleum inclusions

sold
Locality
Zhob Baluchistan, Pakistan
Minerals
Quartz
Dimensions
2.3 x 1.5 x 1.0 cm
Size class
Thumbnail
SID
QUARTZ24

This is a fine example of this uncommon form of Quartz. It is a four phase inclusion in a single terminated Quartz crystal found in central Pakistan 4 years ago. It is highly fluorescent under both short wave and long wave (SW pictured). There are at least 2 moving bubbles or carbon pieces that moves within the yellow petroleum. The gas bubble forms when the the Quartz cools after forming, the petroleum contracts more than the Quartz because it is less dense, it pulls a vacume within the fluid thus creating a "gas" bubble.  The four phases are: the gas bubble trapped in the petroleum, the petroleum itself, a darker brown previously organic material, and black carbon inclusions. I learned this from an insightful geologist who specializes in Quartz inclusions, whom I met at the Tucson Main show. This crystal has an attractive gold and black color range. It has the tiniest Wilbur just below the termination (need a hand lens to view). These are scarce on the market to say the least. I've only seen one good lot ofthese in 8 years of dealing with Pakimers.

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