Where is Blue Apatite found?
Apatite group (Fluorapatite, Chlorapatite, Hydroxylapatite)
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Open the appBlue Apatite 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 Blue Apatite
Brazil
Minas Gerais is a significant source of gem-quality blue apatite, often found in pegmatites.
Madagascar
Known for producing vibrant blue apatite crystals, particularly from the region around Fort Dauphin (Tôlanaro).
Mexico
Various localities, including Cerro de Mercado, Durango, have produced fine apatite specimens, some of which are blue.
Canada
Ontario and Quebec have localities with apatite, including some blue varieties, often associated with metamorphic and igneous rocks.
Myanmar (Burma)
Produces gem-quality apatite, including blue specimens.
United States
Localities in Maine, California, and other states have yielded apatite, with some blue occurrences.
Collecting tips
- Geological Context. Look for blue apatite in areas known for pegmatites, hydrothermal veins, or contact metamorphic zones, especially where other phosphate minerals or rare earth element mineralization is present.
- Associated Minerals. Apatite can be found alongside quartz, feldspar, mica, tourmaline, beryl, and various sulfide minerals.
- Hardness Test. Due to its relatively low hardness (Mohs 5), apatite can be scratched by a steel file or quartz. This helps differentiate it from harder blue minerals like topaz or aquamarine.
- Crystal Habit. Search for characteristic hexagonal prismatic crystals, which can be well-formed in vugs or pockets within host rock.
- Fluorescence. Some apatite specimens, including blue varieties, can exhibit fluorescence under ultraviolet light, often appearing yellow or greenish-yellow. This can be a useful identification aid.
Quick Check
- Color:
- Sky blue to deep blue
- Luster:
- Vitreous to sub-resinous
- Streak:
- White
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