Anorthominasragrite is a very rare hydrated vanadium sulfate mineral known primarily from the type locality in the Minasragra district of Peru. It forms as a secondary mineral in vanadium deposits, typically appearing as delicate, pale blue tabular crystals associated with other secondary vanadates.
Is this anorthominasragrite?
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 anorthominasragrite with a known reference. Anorthominasragrite sits at Mohs 2 — softer than the next harder reference, harder than the previous one.
- 2Check the streakDrag the specimen across an unglazed porcelain plate. Anorthominasragrite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Anorthominasragrite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: pale blue.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: tabular crystals.
Often confused with
Anorthominasragrite vs. its common look-alikes — and how to tell them apart in the field.
Often found alongside anorthominasragrite
Minerals reported to co-occur with anorthominasragrite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- VOSO₄·4H₂O
- Mohs hardness
- 2
- Density
- 2.47 g/cm³
- Colors
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Monoclinic
- Crystal habit
- Tabular Crystals
- Cleavage
- None
- Rarity
- Rare
- Uses
- Collector
- Host rock
- Vanadium-rich Asphaltic Deposits
- Typical price
- $50-300+ depending on specimen quality
Where rockhounds find anorthominasragrite
Classic worldwide localities
- Minasragra, Peru
Field-hunting tip
Look in vanadium-rich asphaltic deposits country — that is the host setting where anorthominasragrite typically forms. If you start seeing pascoite, hewettite, sherwoodite in float, you are in the right ground. Field specimens usually show a tabular crystals habit, so train your eye for that shape before scanning the outcrop.
Common questions
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Find anorthominasragrite on the map
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