Revdite is an extremely rare hydrated sodium silicate mineral primarily found in the alkaline complex of Mont Saint-Hilaire. It typically occurs as small, colorless, platy, or tabular crystals associated with other rare alkaline minerals in pegmatite vugs.
Is this revdite?
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 revdite with a known reference. Revdite 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. Revdite leaves a white streak.
- 3Read the lusterHold the specimen under a strong light. Revdite typically shows a vitreous luster.
- 4Match the color rangeCompare against the expected color range: colorless, white.
- 5Look at form & habitCrystal system: monoclinic. Typical habit: platy crystals, tabular aggregates.
Often confused with
Revdite vs. its common look-alikes, and how to tell them apart in the field.
Often found alongside revdite
Minerals reported to co-occur with revdite. Spotting these in float or country rock is a strong cue you are in the right ground.
All properties
- Chemical formula
- Na₂Si₂O₅·5H₂O
- Mohs hardness
- 2
- Density
- 2.14 g/cm³
- Streak
- White
- Luster
- Vitreous
- Transparency
- Transparent
- Crystal system
- Monoclinic
- Crystal habit
- Platy Crystals, Tabular Aggregates
- Cleavage
- Perfect On {001}
- Rarity
- Rare
- Uses
- Collector, Scientific Research
- Host rock
- Alkaline Igneous Rocks
- Typical price
- $50-300 per specimen
Where rockhounds find revdite
Classic worldwide localities
- Mont Saint-Hilaire, Quebec, Canada
Field-hunting tip
Look in alkaline igneous rocks country, the host setting where revdite typically forms. If you start seeing aegirine, microcline, eudialyte in float, you are in the right ground. Field specimens usually show a platy crystals, tabular aggregates habit, so train your eye for that shape before scanning the outcrop.
Common questions
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Find revdite on the map
RockHoundR shows mapped rockhounding spots, access rules, and lets you log every find.
