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Hanksite
Hanksite is sulfates (sulfate-carbonate), Na22K(SO4)9(CO3)2Cl. In the hand, it rates 3 to 3.5 on the Mohs scale, and it runs pale yellow-green and gray. Big greasy-looking hexagonal barrels from a dry lakebed that taste salty (do not lick, just know), often clouded by black mud inclusions.
The geology.
Hanksite carries the formula Na22K(SO4)9(CO3)2Cl. It belongs to the hexagonal system. On paper it is sulfates (sulfate-carbonate).
It sits at 3 to 3.5 on the Mohs scale. The surface reads vitreous to dull. Light behaviour is transparent to translucent. Specific gravity runs 2.56. The streak is white. It breaks with poor cleavage; conchoidal fracture.
Big greasy-looking hexagonal barrels from a dry lakebed that taste salty (do not lick, just know), often clouded by black mud inclusions.
Expect to see it as large barrel-shaped hexagonal crystals, stubby dipyramids or floater crystals.
The origins.
Evaporite brines of Searles Lake, Trona, California, USA; one of the few places on Earth it forms.
On value, the database notes: affordable; large sharp barrels are popular oddball collectibles.
Traditional associations.
In energy work traditions, associated with dissolving stagnant patterns and cleansing spaces.
Recorded here because it is part of how this material is sold, not because it is a property of the material.
Spotting the real thing.
Big greasy-looking hexagonal barrels from a dry lakebed that taste salty (do not lick, just know), often clouded by black mud inclusions.
Not faked; neglected specimens 'melt' and get resold as worse grades, check surfaces for dissolution rounding.
| Looks like | How to tell them apart |
|---|---|
| Quartz (smoky) | Quartz scratches glass and never tastes saline; hanksite is soft and water-soluble |
| Calcite | Calcite shows rhombic cleavage and fizzes; hanksite fizzes only weakly and forms hexagonal barrels |
| Beryl | Beryl is glass-hard (7.5 to 8); a fingernail-to-coin test separates instantly |
At-home tests.
None of these need a lab. A 10x loupe, good daylight and a steady hand cover most of what a buyer needs to know about hanksite.
| Test | What you should see |
|---|---|
| By eye | Soft (3 to 3.5) and light |
| Water check | Slowly dissolves in water, keep it dry and oiled |
| By eye | Hexagonal barrel habit with greasy luster |
Anything that scratches, burns or dissolves the piece is a lab job. Get it appraised rather than testing it apart.
Care & handling.
At 3 to 3.5 on the Mohs scale this is a soft material. Keep it as a display piece, store it apart from harder stones, and skip daily-wear settings.
It breaks with poor cleavage; conchoidal fracture, which is worth knowing before you set it or drop it.
Warm water and a soft cloth clean almost everything. Ultrasonic tanks, steamers and household cleaners are where pieces get ruined.
Water-soluble alkaline salt: keep away from moisture and wash hands after handling.
A deeper look.
Extended detail on composition, sourcing, authentication and market value.
The physical record
The formula on record is Na22K(SO4)9(CO3)2Cl. Crystal system: Hexagonal. Specific gravity: 2.56. Streak: White. Cleavage and fracture: Poor cleavage; conchoidal fracture.
How it reaches the market
Evaporite brines of Searles Lake, Trona, California, USA; one of the few places on Earth it forms.
What it gets confused with
Quartz (smoky): Quartz scratches glass and never tastes saline; hanksite is soft and water-soluble. Calcite: Calcite shows rhombic cleavage and fizzes; hanksite fizzes only weakly and forms hexagonal barrels. Beryl: Beryl is glass-hard (7.5 to 8); a fingernail-to-coin test separates instantly.
What it is worth
Affordable; large sharp barrels are popular oddball collectibles.
Where buyers get caught
Not faked; neglected specimens 'melt' and get resold as worse grades, check surfaces for dissolution rounding.
One more thing
Collectors dig hanksite at the annual Trona Gem-O-Rama from brine pits; specimens are traditionally wiped with mineral oil to stop them dissolving in humid air.
An education-first guide.
No product links here. We do not sell hanksite, and a guide that only covers our own shelves would not be much of a guide.
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