Creedite

Creedite is a rare, hydrated calcium aluminum fluoride sulfate mineral with the formula Ca3Al2(SO4)F8·2H2O.

Hold a creedite specimen and you’ll probably do a double take. It looks almost weightless, like it ought to be hollow, but it sits in your hand with that solid little “yep, this is real rock” heft. Those radiating sprays seem like they’d turn to dust if you even exhale near them, yet a good piece has a sturdy cluster feel. And the individual blades still grab the light, flashing like tiny window glass when you tilt it.

Creedite is sometimes mistaken for zeolites at first glance because the habit is similar, but the crystals are usually sharper and more lance-like. Color ranges across soft shades of peach, apricot and lilac, and occasionally a pale greenish tint. Under bright LED light the luster appears distinctly glassy, while under warmer light the same specimen looks more pastel.

Creedite got its first write-up in 1916, based on material from the Creed deposit near Wagon Wheel Gap in Mineral County, Colorado, USA. E. S. Larsen and W. T. Schaller are the ones credited with the description, back when U.S. Geological Survey mineral work was turning up a steady stream of secondary minerals that were “new to science.”

The name’s as literal as it gets. It comes straight from that first locality. But here’s the funny part, if you’ve ever tried to track down Colorado creedite: most of the really flashy cabinet specimens people picture now are Mexican, not from the type area.

Most collector-grade creedite on the market comes from Durango, Mexico, especially the Navidad Mine. The species also occurs at the type area in Colorado and a handful of other oxidized deposits worldwide.

Durango material usually comes out of the oxidized zone, where fluorine-rich fluids actually had some breathing room to work. Creedite’s a secondary mineral, so what you’re seeing is chemistry that happened after the main ore body formed: circulating groundwater, sulfates, fluorides, aluminum, calcium, and time. Lots of time.

The matrix on many specimens records the alteration that formed them. It often shows limonite staining, pale chalky clay and sometimes other secondary minerals. This setting matters because it shows the mineral formed in an oxidized, altered environment.

Creedite doesn’t pop up in fresh, unweathered granite. It shows up in those late-stage, open-space pockets in altered rock, where the crystals have room to grow out as sprays and fans instead of getting choked off.

Color: Creedite most often shows peach to orange sprays, but it can also be colorless to white, purple-lilac, or pale green. Color zoning can happen, especially where sprays overlap.

Luster: Luster is vitreous on clean crystal faces.

Pick up the piece and tilt it under a single light. Creedite flashes glassy on the blade faces, but the overall look stays “feathery” because of the radiating habit. If you scratch it with a steel nail, it’ll mark, so don’t do that on a good specimen. The problem with ID photos online is scale, so check for those tight, spiky sprays that look like little fireworks, often on a pale, oxidized matrix.

Creedite is sometimes confused with these materials:

• Apophyllite (especially colorless/white radiating clusters that get mislabeled as creedite sprays)
• Zeolites like stilbite/heulandite (white to peach sprays and sheaves that look similar in quick photos)
• Scolecite/mesolite (needle sprays; often sold as “white creedite” when the crystals are hair-thin)
• Wulfenite (orange pieces from Mexico get cross-labeled, but wulfenite is tabular plates, not fuzzy sprays)
• Dyed quartz clusters sold as “orange creedite” (dye collects at the base of the spray and in little cracks)
• Spun-glass or resin “sprays” (craft fakes made to mimic radiating blades, usually too uniform and warm to the touch)

Creedite is fine to handle with standard mineral-collecting practice. Avoid grinding it or creating dust. If the matrix is crumbly and leaves gritty residue on the fingers, wash hands afterward.

If you need to trim matrix, put on a dust mask and eye protection first. That dust gets everywhere (you can feel it stick to your eyelashes), so skip sweeping it up dry. Wipe it up with a damp cloth instead.

Rough/Tumbled: $30 - $800 per specimen

Prices climb fast depending on color, crystal sharpness, and how intact the sprays are. Those big, damage-free fan pieces from Durango with clean terminations go for real money, mostly because the habit is so fragile it’ll chip if you so much as breathe on it (seriously).

Fragile — Scratch resistance: Fair, Toughness: Poor

Creedite is stable in a cabinet, but the slender crystals are easy to chip and the piece doesn’t like rough handling.

Use & Storage

Store creedite in a perky box or a closed display where it won’t rattle against other minerals. And keep it away from the edge of a shelf because one bump can snap spray tips.

Cleaning

1) Use a soft makeup brush or air blower to remove loose dust. 2) If needed, rinse quickly with room-temperature water and a drop of mild soap, then rinse again. 3) Pat dry and let it finish drying completely before putting it back in a box.

Cleanse & Charge

For energetic cleansing, gentle methods such as smoke, sound or moonlight are suitable. Burying a creedite spray in salt or soil is not advised, because the delicate crystals snag and break easily.

Placement

Put it somewhere you can see the sparkle without touching it all the time, like a high shelf with side lighting. Compared to chunkier cabinet minerals, creedite looks best when light skims across the sprays.

Caution

Don’t use an ultrasonic cleaner or a steamer on this. Skip harsh acids too, and whatever you do, don’t throw it in a tumbler, not even “just for a minute.”

Creedite is mainly a collector's mineral. Its radiating sprays and glassy blades suit display cabinets, and the pastel colors range from peach and apricot to lilac and pale green. Because the slender crystals chip easily, specimens are usually kept in a box or on a shelf rather than handled or carried.

In crystal traditions, creedite is associated with the Third Eye and Crown chakras, the zodiac signs Virgo and Aquarius, and the elements Air and Earth. Practitioners tend to describe it as a stone for quiet focus, using the orderly geometry of the sprays as a visual point for meditation. Color can look different under warm and cool lighting, so some people choose a display spot with the light they will actually use. These are cultural beliefs, not proven effects, and they do not replace medical care.