Biotite Mica Mineral Specimens
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Biotite Mica Mineral Specimens

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Almandine Garnet with Iolite in Biotite-Sillimanite Schist


Code: almm196
Natural garnet in matrix specimen weighing 1.2 lbs
Size: 3.8" x 3.2" x 2"
Mined at Itabira, Brazil
Price: $51.50
This natural mineral specimen has sillimanite-biotite schist matrix with a very large reddish-purple almandine garnet (also known as almandite) with some blue iolite. The matrix consists mostly of long radiating formations of blade-like chatoyant sillimanite with a small amount of biotite.

Almandine Garnet in Biotite-Sillimanite Schist Matrix


Code: almm199
Natural garnet in matrix specimen weighing 2.4 lbs
Size: 5.7" x 4.3" x 2.4"
Mined at Itabira, Brazil
Price: $68.50
This natural mineral specimen has sillimanite-biotite schist matrix with large reddish-purple almandine garnets (also known as almandite) and a small amount of blue iolite. The matrix consists mostly of long radiating formations of blade-like chatoyant sillimanite with some biotite mica. See also an opposite side view of this natural decorator specimen of garnet in sillimanite-biotite schist matrix.

Almandine Garnets in Biotite-Sillimanite Schist


Code: almm152
Natural garnet in matrix specimen weighing 4.0 lbs
Size: 5.6" x 4.7" x 3.5"
(142 x 119 x 90mm)
Mined at Itabira, Brazil
Price: $94.50
This decorator specimen of sillimanite-biotite schist matrix has reddish-purple almandine garnet (also known as almandite) with a small amount of blue iolite as well. The matrix consists predominantly of chatoyant sillimanite with long blade-like form.

Almandine Garnet in Biotite-Sillimanite Schist Matrix


Code: almm202
Natural garnet in matrix specimen weighing 2.1 lbs
Size: 6.2" x 5.4" x 1.8"
Mined at Itabira, Brazil
Price: $81.50
This natural mineral specimen has sillimanite-biotite schist matrix with large reddish-purple almandine garnets (also known as almandite). The matrix consists mostly of black biotite with occasional long radiating formations of blade-like chatoyant sillimanite. There is a 1.5 inch garnet exposed on the opposite side as well. See also an opposite side view of this unique garnet in matrix mineral specimen.

Almandine Garnet in Matrix


Code: almm204
Natural garnet in matrix specimen weighing 4.0 lbs
Size: 7.5" x 4" x 3"
Mined at Itabira, Brazil
Price: $112.50
This natural decorator mineral specimen has almandine garnet in a matrix of sillimanite and biotite with a small amount of iolite.

Almandine Garnet with Biotite, Iolite and Sillimanite


Code: almm203
Natural garnet in matrix specimen weighing 4.2 lbs
Size: 9.5" x 4.6" x 1.8"
Mined at Itabira, Brazil
Price: $116.50
This natural mineral specimen has almandine garnets in sillimanite-biotite schist matrix with iolite. There are garnets exposed on the opposite side as well. See also an opposite side view of this unique garnet in matrix mineral specimen.

Large Garnet in Matrix Decorator Specimen


Code: almm205
Natural garnet in biotite-silllimanite schist matrix weighing 15.0 Lbs
Garnet in Matrix Dimensions: 10.7" x 6" x 5.5"
Mined at Itabira, Brazil
Price: $435.00
This large decorator mineral specimen has a matrix composed of black biotite mica intergrown with long radiating formations of blade-like chatoyant sillimanite. There are large reddish-purple almandine garnets (also known as almandite) exposed on its surfaces. The garnets are fractured and they are translucent to semi-transparent with deep red-purple natural color. See an opposite side view of this unique garnet in matrix decorator specimen.

Large Garnet in Matrix Decorator Specimen


Code: almm201
Natural garnet in biotite-silllimanite schist matrix weighing 23.1 Lbs
Garnet in Matrix Dimensions: : 11.3" x 7" x 6.5"
Mined at Itabira, Brazil
Price: $645.00
This large size decorator mineral specimen has a matrix composed of black biotite mica intergrown with long radiating formations of blade-like chatoyant sillimanite. There are over 80 large reddish-purple almandine garnets (also known as almandite) exposed on its surfaces! The garnets are fractured and they are translucent to semi-transparent. See a full view photo of this unique garnet in matrix decorator specimen. See also a back-view photo of this large garnet in matrix decorator mineral specimen.

Biotite Mica

This unique item is sold.
Code: biom110
7.6" x 4.7" x 0.4"
(19.3cm x 11.9cm x 1.0cm)
Itinga, Brazil
Price: $22.50
This biotite mica specimen was discovered in a pegmatite at Itinga, Brazil.
 

43.9 pound Garnet in Biotite-Sillimanite Matrix Decorator Specimen


Item: almm155_garnet-mineral-specimen
Natural garnet in matrix mineral specimen weighing 43.9 lbs!
This almandine garnet mineral specimen measures 14" x 11" x 6"
Mined near Itabira, Brazil
Price: $785.00
This large size decorator mineral specimen has a matrix composed of black biotite mica intergrown with long blade-like chatoyant sillimanite. There are several large reddish-purple almandine garnets (also known as almandite) exposed on its surfaces, each garnet measures from 2 inches to 3 inches across! The garnets are fractured and they are translucent to semi-transparent. There is about 30% chatoyant sillimanite intergrown with the biotite mica matrix, and there also is a small amount of blue iolite as well. See a full-view photo of this beautiful garnet in matrix decorator specimen. See also a back-view photo of this large garnet in matrix decorator mineral specimen.
 


We also carry an assortment of stands for small & medium sized minerals.

This is the end of our Biotite Mineral Specimens page.

See also our fuchsite mica mineral specimens, our lepidolite mica mineral specimens, and our seraphinite mineral specimens (also known as clinochlore mica).

Mica Mineral Specimens

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Additional Biotite Items in our Virtual Gallery
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Biotite
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Biotite
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Last Updated: June 15, 2021
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