Las Choyas geodes, often called coconut geodes, are spherical nodules characterized by their rough, rocky exterior and interiors frequently lined with sparkling quartz, amethyst, or chalcedony. They are highly prized by rockhounders for the surprise factor when opened, typically found within weathered rhyolitic volcanic deposits in Chihuahua, Mexico.
Is this las choyas coconut geode?
5-step field checkRun through these checks against the specimen in your hand. The more boxes tick, the more confident the ID.
- 1Test the hardnessTry to scratch las choyas coconut geode with a known reference. Las Choyas Coconut Geode sits at Mohs 7 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Las Choyas Coconut Geode leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Las Choyas Coconut Geode typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: white, clear, purple, brown.
- 5Look at form & habitCrystal system: trigonal. Typical habit: botryoidal.
Often confused with
Las Choyas Coconut Geode vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside las choyas coconut geode
Minerals reported to co-occur with las choyas coconut geode. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- SiO₂
- Mohs hardness
- 7
- Density
- 2.65 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Translucent
- Crystal system
- Trigonal
- Crystal habit
- Botryoidal
- Cleavage
- None
- Rarity
- Common
- Uses
- Collector, Lapidary, Decorative
- Host rock
- Rhyolitic Volcanic Rock
- Typical price
- $10-50 small specimen, $100+ large cabinet
Where rockhounds find las choyas coconut geode
Classic worldwide localities
- Trancas, Chihuahua, Mexico
Field-hunting tip
Look in rhyolitic volcanic rock country — that is the host setting where las choyas coconut geode typically forms. If you start seeing quartz, calcite, chalcedony in float, you are in the right ground. Field specimens usually show a botryoidal habit, so train your eye for that shape before scanning the outcrop.
Common questions
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Find las choyas coconut geode on the map
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