Where is Rubellite in Quartz found?
Rubellite (a variety of Tourmaline) in Quartz
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Open the appRubellite in Quartz occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Rubellite in Quartz
Brazil
Minas Gerais is a prominent source, particularly for high-quality rubellite and rubellite in quartz specimens.
United States
Maine and California (especially the Pala District) have historically produced significant rubellite and tourmaline-bearing pegmatites.
Afghanistan
Known for producing fine tourmaline, including rubellite, often found in pegmatitic environments.
Pakistan
Similar to Afghanistan, pegmatite deposits yield various tourmaline colors, including rubellite.
Madagascar
A significant source of gem-quality tourmaline, including rubellite, from pegmatite occurrences.
Nigeria
Known for its tourmaline deposits, including rubellite, often found in pegmatites.
Collecting tips
- Geological Context. Focus on areas known for granitic pegmatites. Look for outcrops of coarse-grained igneous rocks, especially those with unusual mineral assemblages.
- Associated Minerals. Rubellite in Quartz is often found alongside other pegmatite minerals such as feldspar (orthoclase, albite), mica (muscovite, lepidolite), beryl, spodumene, and other tourmaline varieties.
- Visual Identification. Look for transparent to translucent quartz with distinct pink, red, or purplish-red inclusions that may be needle-like, fibrous, or prismatic. The color contrast is a key identifier.
- Hardness Test. Both quartz (7 on Mohs) and tourmaline (7-7.5 on Mohs) are relatively hard. This can help distinguish it from softer minerals if the inclusions are large enough to test.
Quick Check
- Color:
- Pink to red (rubellite) in colorless, white, or smoky (quartz)
- Luster:
- Vitreous
- Streak:
- White (for both quartz and rubellite)
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