Fluorite with Quartz

specimen number:
2063809

location:
Jamner, Jalgaon, Nashik, Maharashtra, India

description:
A pale yellowish smooth semi lustrous slightly translucent ball of crystallized fluorite 4.0 x 4.0 x 3.0 cm in size is set attractively up on a matrix of glassy gemmy purple crystals of quartz measuring to 2.5 cm in size. This is the variety of quartz often called amethyst. The specimen is in good condition and comes with a previous label from the collection of Ray DeMark.

The geology around Jamner within the Jalgaon and Nashik divisions of Maharashtra consists of extensive continental flood basalts belonging to the Deccan Traps, formed by massive volcanic activity millions of years ago. Local basalt quarries and cavities act as host rocks where low-temperature hydrothermal solutions deposited secondary minerals. While commercial mining in these regional quarries primarily extracts basalt aggregate for construction, mineral collectors have uncovered remarkable cavity fillings. Fluorite occurs here in unusual spherical aggregates, botryoidal forms, and distinct yellow to butterscotch or reddish crystal masses nestled within chalcedony, quartz, and calcite linings.

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