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1 item @ $40.00  

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
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

Calciomurmanite

#50435
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

Celadonite

with agate - #DO57590
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
Collection
Don Owens Collection
SOLD
Celadonite - DO57591
Celadonite - DO57591

Celadonite

#DO57591
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
Collection
Don Owens Collection

Clintonite

with Diopside - #57585
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.).


Clintonite

Formula
CaAlMg2(SiAl3)O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Massive - Lamellar, Radial 
Cleavage
Perfect, None, None 
Luster
Pearly 
Color
colorless, green, yellow, red, reddish brown 
Streak
colorless 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4-5 
SOLD
Ferroaluminoceladonite - 46455
Ferroaluminoceladonite - 46455

Ferroaluminoceladonite

#46455
Locality
Taikeu, Polar Urals, Russia 
Formula
KFe2+AlSi4O10(OH)2 
Availability
Sold
Size
0.8 x 0.5 x 0.3 cm - Thumbnail 
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

Tiny, less than 0.25mm, micaceous scales identified by Dr. Igor Pekov.


Ferroaluminoceladonite

Formula
KFe2+AlSi4O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Microscopic Crystals 
Cleavage
Perfect, None, None 
Luster
Earthy (Dull) 
Color
dark bluish green 
Streak
paler green 
Class
Monoclinic - Prismatic 
Fracture
Earthy 
Hardness
2-2.5 
Special Info
XRD Confirmed
Special Info
EDS Confirmed

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