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Kulanite
Current inventory:  0 gems
 

Kulanite

  
Kulanite is named to honor Mr. Alan Kulan, Ross River, Yukon Territory, Canada, a co-discoverer of the Rapid Creek phosphate occurrences.

Discovered in 1975;   IMA status: Valid (IMA approved 1976)

 

Chemistry

 

 

Chemical Formula:

Ba(Fe2+,Mn,Mg)2Al2(PO4)3(OH)3

 

Barium Iron Manganese Magnesium Aluminum Phosphate Hydroxide

Molecular Weight:

637.65 gm

Composition: 

Barium

21.54 %

Ba

24.05 %

BaO

Magnesium

0.76 %

Mg

1.26 %

MgO

Manganese

5.17 %

Mn

6.67 %

MnO

Aluminum

8.46 %

Al

15.99 %

Al2O3

Iron

11.39 %

Fe

14.65 %

FeO

Phosphorus

14.57 %

P

33.39 %

P2O5

Hydrogen

0.47 %

H

4.24 %

H2O

Oxygen

37.64 %

O

 

 

 

100.00 %

 

100.00 %

= TOTAL OXIDE

 

 

 

 

 

 

  

 

Classification

   

   

Mineral Classification:

Phosphates

Strunz 8th Ed. ID:

7/B.29-20

Nickel-Strunz 10th Ed. ID:

8.BH.20

 

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H
2O
H : With medium-sized and large cations, (OH,etc.):RO
4 = 1:1

Related to:

Bjarebyite Group, Kulanite - Penikisite Series.

Synonyms:

IMA1975-012

 

 

Crystal Data

   

   

Crystallography:

Monoclinic - Prismatic

Crystal Habit:

As plates, to 1.5 cm, tabular on {101}, with {101}, {100}, {001}, {011}, {161}, several others; aggregated in rosettes. Commonly in zoned intergrowth with penikisite.

Twinning:

None

 

 

Physical Properties

   

 

Cleavage:

{010} Good, {100} Good

Fracture:

Irregular/Uneven, Conchoidal

Tenacity:

Brittle

Moh's Hardness:

4.0

Density:

3.91 (g/cm3)

Luminescence:

None

Radioactivity:

Not Radioactive

Other:

S

 

 

Optical Properties

   

   

Color:

Blue, Blue-Green, Green, Black-Green

Transparency:

Transparent to Translucent

Luster:

Adamantine, Vitreous

Refractive Index:

1.703 - 1.723  Biaxial ( + )

Birefringence:

0.020

Dispersion:

Very Stong and asymmetrical; r > v

Pleochroism:

X = brownish green; Y = green; Z = very pale brown.

 

 

Occurances

   

   

Geological Setting:

A weathering product in fractures in sideritic iron formation (Cross-cut Creek, Canada); as disseminations and veinlets in granite pegmatite (Xiyuantou, China).

Common Associations:

Anatase, Arrojadite, Brazilianite, Fluorapatite, Goyazite, Penikisite, Quartz, Rapidcreekite, Siderite (Cross-cut Creek, Canada); Montebrasite, Palermoite, Triphylite (Palermo #1 mine, New Hampshire, USA)

Type Locality:

Rapid Creek, Dawson Mining District, Yukon Territory, Canada

Year Discovered:

1976; (IMA approved 1976)

View mineral photos:

Kulanite Mineral Photos and Locations

 

 

More Information

   

   

 

Mindat.org
Webmineral.com

 

 


Kulanite is a very rare barium phosphate mineral that is one of several rare minerals that have recently begun to come out of the Yukon Territory. Crystals are small so gems are usually very small. Although small, gems are very attractive with colors ranging from Blue to Green.

Kulanite comes from Cross-cut Creek, 1.5 km upstream from the confluence with Rapid Creek, Big Fish-Blow River area, Yukon Territory, Canada. In the White Picacho district, Maricopa and Yavapai Counties, Arizona, and at the Palermo #1 mine, North Groton, Grafton County, New Hampshire, USA. From the Xiyuantou pegmatite, Nanping, Fujian Province, China.
 

  
Kulanite gems for sale:

We have not photographed our Kulanite gems. Please check back soon.
 

 

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