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0 item @ $0.00  

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 tainiolite, tetraferriannite, tetraferriphlogopite, trilithionite and more from places like Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada, Magnet Cove, Hot Spring Co., Arkansas, United States, Silver Crater mine, Bancroft, Ontario, Canada , Turii alkaline Massif, Kola Peninsula, Russia, Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Brazil, and Harding mine, Taos Co., New Mexico, United States.

SOLD
Tainiolite - 57589
Tainiolite - 57589

Tainiolite

#57589
Locality
Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada 
Formula
KLiMg2Si4O10F2 
Availability
Sold
Size
5.5 x 3 x 3 cm - Sm Cabinet 

A silvery yellow plate of Tainolite to 2cm on syenite matrix.

Tainiolite is a Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahedral with lithium and Mg(II), and fluorine in the (A) position.

Occurs as pseudohexagonal tablets to 5cm, as scales, colorless to brownish green. Found in nepheline syenite pegmatites at MSH and Hot Springs, Arkansas.


Tainiolite

Formula
KLiMg2Si4O10F2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous, Foliated 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
brownish, colorless, greenish brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Flexible 
Hardness
2.5-3 
SOLD
Tainiolite - AH57598
Tainiolite - AH57598

Tainiolite

#AH57598
Locality
Magnet Cove, Hot Spring Co., Arkansas, United States 
Formula
KLiMg2Si4O10F2 
Availability
Sold
Size
13 x 14.5 x 1.5 cm - Cabinet 

A very large plate of yellowish brown micaceous Tainiolite. 


Tainiolite

Formula
KLiMg2Si4O10F2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous, Foliated 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
brownish, colorless, greenish brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Flexible 
Hardness
2.5-3 
Collection
Arnold G Hampson Collection

Tetraferriannite

#BW57584
Locality
Silver Crater mine, Bancroft, Ontario, Canada  
Formula
KFe2+3(Si3Fe3+)O10(OH)2 
Availability
Sold
Size
6 x 4.5 x 1.3 cm - Sm Cabinet 

Large black crystal 5.5cm across. Tetraferriannite is the ferric iron analogue Annite.


Tetraferriannite

Formula
KFe2+3(Si3Fe3+)O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Scaly, Massive - Lamellar 
Cleavage
Perfect, None, None 
Luster
Vitreous - Adamantine 
Color
brown, brownish black 
Streak
light brown 
Class
Monoclinic - Prismatic 
Hardness
2.5-3 
Collection
Bill Wilson Collection
SOLD
Tetraferriphlogopite - 46484
Tetraferriphlogopite - 46484

Tetraferriphlogopite

#46484
Locality
Turii alkaline Massif, Kola Peninsula, Russia 
Formula
KMg3(Fe3+Si3O10)(OH,F)2 
Availability
Sold
Size
1 x 1 x 1 cm - Thumbnail 
Special Info
XRD Confirmed 

Dark, almost black tiny crystals Tetraferriphlogopite, a member of the biotite group. Identified by Dr. Igor Pekov.

Tetraferriphlogopite is a Phyllosilicate - Monoclinic - Mica group member. It is an ordinary (True or Common) Mica - Trioctahedral with Mg, some substitutions for of Fe3+ for silicon at the (T) positions and OH>F at (A) otherwise would be Fluorotetraferriphlogopite.

Found in ultrabasic alkaline massif of Kovdor.


Tetraferriphlogopite

Formula
KMg3(Si3Fe3+)O10(OH)2 
Crystal System
Monoclinic 
Class
Monoclinic - Prismatic 
Hardness
Special Info
XRD Confirmed

Trilithionite

#BW57580
Locality
Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Brazil 
Formula
KLi1.5Al1.5(Si3Al)O10F2 
Availability
Sold
Size
6 x 4.5 x 4 cm - Sm Cabinet 

Litium bearing purple crystal of Trilithionite 3.5 x 3.5cm.


Trilithionite

Formula
KLi1.5Al1.5(Si3Al)O10F2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Elastic 
Hardness
Collection
Bill Wilson Collection

Trilithionite

#BW57592
Locality
Harding mine, Taos Co., New Mexico, United States 
Formula
KLi1.5Al1.5(Si3Al)O10F2 
Availability
Sold
Size
4 x 4 x 3 cm - Miniature 
Tagged
pegmatite mineral  

Rose pink micaceous flakes of Trilionite to 5mm.


Trilithionite

Formula
KLi1.5Al1.5(Si3Al)O10F2 
Crystal System
Monoclinic 
Crystal Habit
Micaceous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Elastic 
Hardness
Collection
Bill Wilson Collection

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