Tom Loomis's Image Gallery

Adelite: CaMg(AsO4)(OH)

Comments: Yellowish glassy grains of adelite to 1mm in matrix.
Location: Langban, Filipstad, Varmland, Sweden. Scale: Sample Size 6 x 6.5 x 4.5 cm.
© Tom Loomis / Dakota Matrix

Adelite: CaMg(AsO4)(OH)

Comments: Yellowish glassy grains of adelite to 1mm in matrix.
Location: Langban, Filipstad, Varmland, Sweden. Scale: Sample Size 6 x 6.5 x 4.5 cm.
© Tom Loomis / Dakota Matrix

Afghanite: (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O)

Comments: Stubby hexagonal dark blue afghanite crystal to 2cm set in sulfide rich marble. The dark blue color is just a thin veneer on a pale-blue crystal.
Location: Rabot, Sar-e-Sang Dist., Badakshan, Afghanistan. Scale: Overall: 5 x 2 x 4 cm.
© Tom Loomis / Dakota Matrix

Afghanite: (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O)

Comments: Stubby hexagonal dark blue afghanite crystal to 2cm set in sulfide rich marble. The dark blue color is just a thin veneer on a pale-blue crystal.
Location: Rabot, Sar-e-Sang Dist., Badakshan, Afghanistan. Scale: Overall: 5 x 2 x 4 cm.
© Tom Loomis / Dakota Matrix

Agardite-(Y): (Y,Ca)Cu6(AsO4)3(OH)6·3(H2O)

Comments: Fibrous to fine acicular green micro crystals of agardite-(Y) (chlorotile) to 1mm.
Location: Clara mine, Wolfach, Schwarzwald, Baden-Württemberg, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Agardite-(Y): (Y,Ca)Cu6(AsO4)3(OH)6·3(H2O)

Comments: Fibrous to fine acicular green micro crystals of agardite-(Y) (chlorotile) to 1mm.
Location: Clara mine, Wolfach, Schwarzwald, Baden-Württemberg, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Aguilarite: Ag4SeS

Comments: Black, bladed, metallic aguilarite crystals in matrix.
Location: 4th of July mine, Custer Co., Idaho, USA. Scale: Crystal length 3 mm.
© Tom Loomis / Dakota Matrix

Aguilarite: Ag4SeS

Comments: Black, bladed, metallic aguilarite crystals in matrix.
Location: 4th of July mine, Custer Co., Idaho, USA. Scale: Crystal length 3 mm.
© Tom Loomis / Dakota Matrix

Ajoite: (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)

Comments: Aqua blue, long bladed crystals or ajoite on matrix.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Ajoite: (K,Na)3Cu20Al3Si29O76(OH)16·~8(H2O)

Comments: Aqua blue, long bladed crystals or ajoite on matrix.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Aldermanite: Mg5Al12(PO4)8(OH)22·32(H2O)  
Minyulite: KAl2(PO4)2(OH,F)·4(H2O)

Comments: White, blocky aldermanite crystals to 2mm completely covering one face of matrix with colorless prismatic Minyulite crystals in sprays to 3mm.
Location: Tom's Phosphate quarry, Kapunda, South Australia, Australia. Scale: Overall: 2 x 1.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Aldermanite: Mg5Al12(PO4)8(OH)22·32(H2O)  
Minyulite: KAl2(PO4)2(OH,F)·4(H2O)

Comments: White, blocky aldermanite crystals to 2mm completely covering one face of matrix with colorless prismatic Minyulite crystals in sprays to 3mm.
Location: Tom's Phosphate quarry, Kapunda, South Australia, Australia. Scale: Overall: 2 x 1.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Amarantite: Fe+++(SO4)(OH)·3(H2O)

Comments: Amber-like, long, prismatic, bright red amarantite crystals.
Location: Chuquicamata, Antofagasta, Chile. Scale: Crystal size 3 cm.
© Tom Loomis / Dakota Matrix

Amarantite: Fe+++(SO4)(OH)·3(H2O)

Comments: Amber-like, long, prismatic, bright red amarantite crystals.
Location: Chuquicamata, Antofagasta, Chile. Scale: Crystal size 3 cm.
© Tom Loomis / Dakota Matrix

Ameghinite: NaB3O3(OH)4

Comments: Aggregate of white, elongated crystals of ameghinite.
Location: Tincalayu Mine, Salta, Argentina. Scale: Specimen Size 1.5 x 1.5 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Ameghinite: NaB3O3(OH)4

Comments: Aggregate of white, elongated crystals of ameghinite.
Location: Tincalayu Mine, Salta, Argentina. Scale: Specimen Size 1.5 x 1.5 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Angastonite: CaMgAl2(PO4)2(OH)4?7H2O

Comments: White acicular to short prismatic crystals of angastonite covering a dark matrix.
Location: Penrice quarry, Angaston, South Australia, Australia. Scale: Overall: 5.5 x 3.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Angastonite: CaMgAl2(PO4)2(OH)4?7H2O

Comments: White acicular to short prismatic crystals of angastonite covering a dark matrix.
Location: Penrice quarry, Angaston, South Australia, Australia. Scale: Overall: 5.5 x 3.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Apachite: Cu9Si10O29·11(H2O)

Comments: Spherical crystals 0.2mm of blue apachite as grape-like botryodal aggregates.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3.5 mm.
© Tom Loomis / Dakota Matrix

Apachite: Cu9Si10O29·11(H2O)

Comments: Spherical crystals 0.2mm of blue apachite as grape-like botryodal aggregates.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3.5 mm.
© Tom Loomis / Dakota Matrix