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Micaceous Minerals

Saturday, 26 February 2022 08:00 AM

Introducing the "Micaceous Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including annite, calciomurmanite, celadonite, clintonite, and ferroaluminoceladonite and more from places like Redruth, Cornwall, England, P'yalkimpor Mt, Lovozero Massif, Murmansk Oblast, Russia, Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States, Crestmore, Riverside Co., California, United States, and Taikeu, Polar Urals, Russia.

Annite

#PD57608

$35.00 - Available
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Locality: Redruth, Cornwall, England
Formula: KFe²⁺₃(Si₃Al)O₁₀(OH)₂
Availability: Available
Price: $35.00
Size: 7 x 5.5 x 3 cm - Sm Cabinet

Bronzy black Annite flakes throughout mass.

Biotite has historically been treated as an individual mineral species by geologist. Rieder et. al in the Canadian Mineralogist v. 36 (1998), reclassified and placed Biotite within the Annite-Phlogopite series.

Biotite is a phyllosilicate of the Mica group and is classified as an ordinary (True or Common) mica meaning it has flexible cleavage plates. For more information on Mica minerals and other phyllosilicates please reference our article - Click Here.

Annite

Formula: KFe²⁺₃(Si₃Al)O₁₀(OH)₂
Crystal System: Monoclinic
Cleavage: Perfect, None, None
Luster: Sub Metallic
Color: reddish brown, black
Streak: brownish white
Class: Monoclinic - Prismatic
Hardness: 2.5-3

Collection: Don Phillips Collection

Mineralpedia: View Annite
On Dakota Matrix: Previously Sold Annite
On Dakota Matrix: Other Available Annite
WebMineral: View Annite
Mindat: View Annite

SOLD

Calciomurmanite

#50435

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Locality: P'yalkimpor Mt, Lovozero Massif, Murmansk Oblast, Russia
Formula: (Na,◻)₂Ca(Ti,Mg,Nb)₄[Si₂O₇]₂O₂(OH,O)₂(H₂O)₄
Availability: Sold
Size: 3 x 1.5 x 1.5 cm - Thumbnail
Special Info: XRD Confirmed

Pink micaceous crystals to 1.7mm. Calciomurmanite looks like a mica, but it is not. It is sorosilicate rather than a phyllosilicate, like true micas. Identified by Dr. Igor Pekov.

Calciomurmanite

Special Info: XRD Confirmed

Mineralpedia: View Calciomurmanite
On Dakota Matrix: Previously Sold Calciomurmanite
On Dakota Matrix: Other Available Calciomurmanite
WebMineral: View Calciomurmanite
Mindat: View Calciomurmanite

SOLD

Celadonite

with agate - #DO57590

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Resources

Locality: Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Formula: KMgFe³⁺Si₄O₁₀(OH)₂
Availability: Sold
Size: 3.5 x 3 x 2 cm - Miniature

Dark green, very tiny, flakes of Celadonite encrusting beautiful yellow and brown banded agate. In some areas of the agate Pyrite crystal to 0.75mm can be seen.

Celadonite

Formula: KMgFe³⁺Si₄O₁₀(OH)₂
Crystal System: Monoclinic
Crystal Habit: Earthy, Aggregates, Encrustations
Cleavage: Perfect, None, None
Luster: Earthy (Dull)
Color: gray green, bluish green
Streak: greenish white
Class: Monoclinic - Prismatic
Fracture: Earthy
Hardness: 2

Collection: Don Owens Collection

Mineralpedia: View Celadonite
On Dakota Matrix: Previously Sold Celadonite
On Dakota Matrix: Other Available Celadonite
WebMineral: View Celadonite
Mindat: View Celadonite

SOLD

Celadonite

#DO57591

Details
Data
Provenance
Resources

Locality: Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Formula: KMgFe³⁺Si₄O₁₀(OH)₂
Availability: Sold
Size: 5 x 3.5 x 3 cm - Miniature

Dark green radial cones to 2mm. Identified by Don Owens.

Celadonite

Formula: KMgFe³⁺Si₄O₁₀(OH)₂
Crystal System: Monoclinic
Crystal Habit: Earthy, Aggregates, Encrustations
Cleavage: Perfect, None, None
Luster: Earthy (Dull)
Color: gray green, bluish green
Streak: greenish white
Class: Monoclinic - Prismatic
Fracture: Earthy
Hardness: 2

Collection: Don Owens Collection

Mineralpedia: View Celadonite
On Dakota Matrix: Previously Sold Celadonite
On Dakota Matrix: Other Available Celadonite
WebMineral: View Celadonite
Mindat: View Celadonite

SOLD

Clintonite

with Diopside - #57585

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Locality: Crestmore, Riverside Co., California, United States
Formula: CaAlMg₂(SiAl₃)O₁₀(OH)₂
Availability: Sold
Size: 7 x 4.5 x 3 cm - Sm Cabinet

Emerald green micaceous plates to 1.5cm.

Clintonite is a phyllosilicate - Monoclinic - Mica group member. It is a brittle Mica - Trioctahedral. Ca, Na, K occupies the Interlayer (I) positions while Mg, Fe2+, Al, Fe3+, Mn in the octahedral positions.

It occurs as tabular, pseudohexagonal, foliated crystals in association with calcite, idocrase, grossular, spinel, phlogopite in crystalline limestones i.e. Crestmore (Encycl. of Min.).