Tectoslicate Minerals Gallery M&W Minerals

Tectosilicates Gallery

Go here for Quartz Galley Go here for Zeolites Gallery

Tectosilicates are composed of interconnected SiO₄ tetrahedrons where all the oxygens are shared with other tetrahedrons yielding a silicon to oxygen ratio of 1:2. Where only silicon and oxygen are present gives rise to the Quartz family composed of SiO₂. In most other Tectosilicate minerals, the aluminum ion can substitutes for the silicon ion in the tetrahedrons are called with Al-Si framework.

Feldspar group (Albite, Microcline, Orthoclase, Oligoclase, Anorthite, and Feldspar varieties of Moonstone, Amazonite, Labradorite, Pericline and others), the Feldspathoid group (Sodalite, Lazulite, Leucite, Nepheline and others), Scapolite and others

minerals in alphabetical order by first letter only

click on the title link or photo to proceed to a specimen's page

A

#1211 Amazonite with possible Phenakite Florissant, Crystal Park area, Teller County, Colorado, USA 3.5 x 4 x 2.7 cm $50	#895 Amazonite Crystal Park, Jefferson County, Colorado, USA 4.4 x 3 x 2.3 cm $50	#709 Amazonite variety: White Cap Powder Ridge Claim, Teller County, Colorado Ex.Richard Kosnar 6.4 x 5.4 x 4.8 cm $300
#324 Albite variety: Pericline with Epidote Fazenda Rubin Pimenta Mine, Capelinha, Jequitinhonha valley, Minas Gerais, Brazil 6.8 x 4.4 x 6.3 cm $125

C

#985 Cristobalite with Fayalite

near Coso Junction, Inyo County, California, USA
SiO₂ with Fe²⁺₂SiO₄
5.2 x 3.5 x 3.7 cm
$25

#440 Cancrinite

Kirov Mine, Mt. Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia
5.2 x 2.6 x 2.5 cm
$15

F

#609 Large Baveno Twin Feldspar Crystal

Unknown Location
Ex. Philadelphia Academy of Sciences
36 x 9.5 x 7.5 cm
$175

L

#452 Leucite

Magnet Cove, Hot Springs County, Arkansas
K(AlSi₂)O₆
3.4 x 3 x 2.9 cm
$35

#451 Leucite

Poggio Nibbio, Vico Lake, Viterbo Province, Latium, Italy
K(AlSi₂)O₆
5.5 x 4.8 x 4.3 cm
$35

M

#1256 Microcline

Jefferson County, Colorado, USA
6.4 x 5.6 x 5.6 cm
$20

#393 Microcline Twin, Smoky Quartz, Chabazite and Epidote

Jietou, Wulian Co., Rizhao Prefecture, Shandong Province, China
8 x 9.5 x 7.5 cm
$175

O

#1220 Chocolate Opal Fossilized Plant Stem

Welo, Afar, Ethiopia
3.5 x 1.8 x 1.6 cm
$90

#831 Opal

Honduras
2.4 x 1.9 x 1 cm
$75

#740 Opal in Rhyolite

Jalisco, Mexico
1.4 x 2.2 x 1.2 cm
$15

Specimens which have this class of minerals as an associated mineral

#1212 Aquamarine, Microcline, Smoky Quartz, Biotite Minas Gerais, Brazil 8.1 x 4.5 x 4.2 cm $25	#402 Aquamarine, Tourmaline (Schorl), Albite Erongo Mountain, Erongo Region, Namibia 10.6 x 8.5 x 4.5 cm $175	#25 Brazilianite on Albite Jenipapo, Itinga, Minas Gerais, Brazil 5.5 x 4 x 0.7 cm $250
#1227 Myrickite: Cinnabar in Common Opal Winnemucca District, Humboldt Co., Nevada, USA 7.2 x 6.4 x 2.2 cm $20	#850 Datolite in Basalt with Microcline Flint Steel Mine, Ontonagon County, Michigan, USA 4.7 x 4.2 x 0.7 cm $30	#975 Goethite on Smoky Quartz on Microcline Lake George, Park Co., Colorado, USA (3.0 x 1.4 x 1.2) x (3.4 x 2.2 x 1.2) x (2.1 x 1.5 x 1.5) cm $25
#761 Hydroxylapatite on Microcline Sapo mine, Ferruginha, Conselheiro Pena, Doce valley, Minas Gerais, Brazil 12 x 4.5 x 5.7 cm $200	#734 Prehnite and Microcline variety Adularia Osceola No. 5, Osceola Mine, Osceola, Houghton Co., Michigan, USA 8.2 x 7.4 x 4.5 cm $25	#504 Polylithonite on Albite with Aegirine Poudrette Quarry, Mont Saint-Hilaire, Rouville RCM, Monteregie, Quebec, Canada KLi₂Al(Si₄O₁₀)(F,OH)₂ 6.1 x 3.8 x 2.5 cm $35
#1023 Smoky Citrine Elesital Scepter Quartz Coronel Murta, Minas Gerais, Brazil 11.2 x 5.8 x 4.9 cm $175	#52 Smoky Quartz, Feldspar Group Jietou, Wulian Co., Rizhao Prefecture, Shandong Province, China 11 x 7 x 6.5 cm $175	#1271 Spessartine Garnet on Microcline with Smoky Quartz Tongbei, Yunxiao County, Zhangzhou Prefecture, Fujian Province, China 7.7 x 6 x 3.9 cm (Stacked Microcline crystals rise appx. 2 cm above matrix) $50
#897 Spessartine Garnet on Albite Navegadora Mine, Penha do Norte, Conselheiro Pena, Doce valley, Minas Gerais, Brazil 5.1 x 2.9 x 2.5 cm $150	#721 Spessartine Garnet on Microcline with Smoky Quartz Tongbei, Yunxiao County, Zhangzhou Prefecture, Fujian Province, China 8.5 x 3.3 x 2.4 cm $60	#457 Gemmy Spessartine Garnet on Microcline Tongbei, Yunxiao County, Zhangzhou Prefecture, Fujian Province, China 12 x 9.5 x 2.8 cm $75
#373 Silver/Copper Hafbreed with Microcline and Epidote Adventure mine, Butler Lode, Greenland, Ontonagon County, Michigan, USA 6 x 6 x 6.8 cm $175	#174 Spessartine Garnet, Smoky Quartz on Bladed Feldspar Tongbei, Yunxiao County, Zhangzhou Prefecture, Fujian Province, China 13.1 x 13 x 8 cm $250	#1147 Tourmaline, Quartz, Lepidolite, Albite and Fluorapatite Pederneira Mine, Sao Jose da Safira, Minas Gerais, Brazil 6.1 x 4.5 x 3.2 cm $200
#1126 Titanite Twin and Chlorite on Adularia Warren Brothers Quarry, Acushnet, Bristol Co., Massachusetts, USA 8.1 x 5.3 x 1.8 cm $125	#473 Topaz, Amazonite, Tourmaline, Phenakite Zapot pegmatite, Gillis Range, Fitting District, Mineral Co., Nevada 4.7 x 3.4 x 2.3 cm $95	#384 Tourmaline, Apatite, Lepidolite on Albite Pederneira Mine, Sao Jose da Safira, Doce valley, Minas Gerais, Brazil 9 x 5.4 x 4.3 cm $275
#233 Multicolor Tourmaline (Elbaite) Mt Mica Quarry, Paris, Oxford County, Maine, USA 8.3 x 5.4 x 4 cm $100	#57 Tourmaline (Elbaite), Albite, Lepidolite Pederneira claim, Sao Jose da Safira, Doce valley, Minas Gerais, Brazil 12.5 x 9 x 7 cm $175

A

C

F

L

M

O

Specimens which have this class of minerals as an associated mineral

Other Galleries

By Mineral Species or Group

By Geographic Region

Systematic Galleries

By Special Interest

By Price