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Creedite
Current inventory:  2 gems
 

Creedite

Chemistry:  Ca3Al2(SO4)(F,OH)10 · 2(H2O)

Discovered in 1916;   IMA status: Valid (pre-IMA; Grandfathered).
Creedite is named after the type locality in the Creede quadrangle, Colorado, USA.

 

Classification

   

   

Mineral Classification:

Halides

Strunz 8th Ed. ID:

3/C.01-40

Nickel-Strunz 10th Ed. ID:

3.CG.15

 

3 : HALIDES
C : Complex halides
G : Aluminofluorides with CO
3, SO4, PO4

 

 

Crystal Data

   

   

Crystallography:

Monoclinic - Prismatic

Crystal Habit:

Crystals are prismatic, bladelike to acicular to 8 cm; radiating, drusy to granular aggregates.

Twinning:

None

 

 

Physical Properties

   

 

Cleavage:

[100] Perfect

Fracture:

Conchoidal

Tenacity:

Brittle

Moh's Hardness:

4.0

Density:

2.713 - 2.730 (g/cm3)

Radioactivity:

Not Radioactive

 

 

Optical Properties

   

   

Color:

Colorless to white, orange, purple

Transparency:

Transparent to Translucent

Luster:

Vitreous

Refractive Index:

1.461 - 1.485  Biaxial ( - )

Birefringence:

0.024

Dispersion:

Strong

Pleochroism:

Colorless

 

 

Occurances

   

   

Geological Setting:

Uncommon in fluorite-rich hydrothermal mineral deposits.

Type Locality:

Colorado Fluorspar Co. Mine, Wagon Wheel Gap, Mineral Co., Colorado, USA

Year Discovered:

1916

View mineral photos:

Creedite Mineral Photos and Locations

 

 

More Information

   

   

 

Mindat.org
Webmineral.com

 

 


Creedite is a very rare sulfate gem that was discovered near Creede, Colorado, USA. It is a complex aluminum salt found only in a few locations worldwide. Creedite is found as colorless, white, rose, lilac, purple and orange. Crystals are often in beautiful radial clusters.

The only known locations for gem quality crystals of Creedite are Aqshatau, Qaraghandy Oblysy, Kazakhstan; Santa Eulalia District, Chihuahua, Mexico; San Pedro Mine, Mapimí, Durango, Mexico; Navidad Mine, Rodeo, Durango, Mexico; Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia; Hall's mine, San Antone District, Nye County, Nevada, USA.
 

  
Creedite gems for sale:

Creedite-002

Gem:

Creedite

Stock #:

CREED-002

Weight:

0.350 ct

Size:

7.69 x 3.53 x 2.71 mm

Shape:

Marquise

Color:

Lilac/Light Purple

Clarity:

SI - MI

Origin:

Dal'negorsk, Eastern Russia

Treatment:

None (natural)

Price:

SOLD (but we have others)

Pictures are of the actual gem offered for sale.
Gem images are magnified to show detail.

Creedite-002

This extemely rare gem is from Dal'negorsk (Dalnegorsk), Primorskiy Kray, Far-Eastern Region, Russia. The gem is a beautiful lilac/light purple, the rarest color of Creedite.


Creedite-001

Gem:

Creedite

Stock #:

CREED-001

Weight:

0.360 ct

Size:

6.18 x 3.24 x 2.18 mm

Shape:

Emerald

Color:

Orange

Clarity:

MI

Origin:

Navidad Mine, Durango, Mexico

Treatment:

None (natural)

Price:

$85.00    [ Make an offer ]

Pictures are of the actual gem offered for sale.
Gem images are magnified to show detail.

Creedite-001

This very rare gem is from the Navidad Mine, Durango, Mexico. The gem is moderately included with a couple surface flaws on the table but the bright orange color is very eye catching.


 


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