Rruff Database's Image Gallery

Feruvite: (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4

Comments: Dark green grains of feruvite in matrix.
Location: Red Cross Lake, Manitoba, Canada. Scale: See Image.
© Rruff Database

Feruvite: (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4

Comments: Dark green grains of feruvite in matrix.
Location: Red Cross Lake, Manitoba, Canada. Scale: See Image.
© Rruff Database

Filatovite: K[(Al,Zn)2(As,Si)2O8]

Comments: Colorless prismatic single crystal embedded in epoxy, co-type material.
Location: Great Tolbachik Eruption (1976), Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: See Image.
© Rruff Database

Filatovite: K[(Al,Zn)2(As,Si)2O8]

Comments: Colorless prismatic single crystal embedded in epoxy, co-type material.
Location: Great Tolbachik Eruption (1976), Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: See Image.
© Rruff Database

Fingerite: Cu11(VO4)6O2

Comments: Black submetallic well-formed prismatic crystals on matrix with black, poorly-formed ziesite.
Location: Izalco Volcano, Sonsonate Department, El Salvador. Scale: See Image.
© Rruff Database

Fingerite: Cu11(VO4)6O2

Comments: Black submetallic well-formed prismatic crystals on matrix with black, poorly-formed ziesite.
Location: Izalco Volcano, Sonsonate Department, El Salvador. Scale: See Image.
© Rruff Database

Florencite-(Nd): (Nd,Ce)Al3(PO4)2(OH)6

Comments: Brown earthy pulverulent aggregate of florencite-(Nd) forming a thin coating on matrix.
Location: Sausalito Road Quarry, Sausalito, Marin County, California, USA. Scale: See Image.
© Rruff Database

Florencite-(Nd): (Nd,Ce)Al3(PO4)2(OH)6

Comments: Brown earthy pulverulent aggregate of florencite-(Nd) forming a thin coating on matrix.
Location: Sausalito Road Quarry, Sausalito, Marin County, California, USA. Scale: See Image.
© Rruff Database

Fluoro-ferroleakeite: NaNa2(Fe++2Fe+++2Li)Si8O22F2

Comments: Heavy mineral concentrate of dark blue to black fluoro-ferroleakeite grains, co-type sample.
Location: Questa, Taos County, New Mexico, USA. Scale: See Image.
© Rruff Database

Fluoro-ferroleakeite: NaNa2(Fe++2Fe+++2Li)Si8O22F2

Comments: Heavy mineral concentrate of dark blue to black fluoro-ferroleakeite grains, co-type sample.
Location: Questa, Taos County, New Mexico, USA. Scale: See Image.
© Rruff Database

Fluoro-magnesio-arfvedsonite: NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2

Comments: Heavy mineral concentrate of small dark green fragments of fluoro-magnesio-arfvedsonite.
Location: Unknown. Scale: See Image.
© Rruff Database

Fluoro-magnesio-arfvedsonite: NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2

Comments: Heavy mineral concentrate of small dark green fragments of fluoro-magnesio-arfvedsonite.
Location: Unknown. Scale: See Image.
© Rruff Database

Gadolinite-(Y): Y2Fe++Be2Si2O10  
Calciogadolinite: CaREE(Fe+++)Be2Si2O10

Comments: Black vitreous, metamict massive gadolinite-(Y) also known as calcian gadolinite.
Location: Ytterøya Mine, Røvika, Ytterøya (island), Levanger, Nord-Trondelag, Norway. Scale: See Image.
© Rruff Database

Gadolinite-(Y): Y2Fe++Be2Si2O10  
Calciogadolinite: CaREE(Fe+++)Be2Si2O10

Comments: Black vitreous, metamict massive gadolinite-(Y) also known as calcian gadolinite.
Location: Ytterøya Mine, Røvika, Ytterøya (island), Levanger, Nord-Trondelag, Norway. Scale: See Image.
© Rruff Database

Gedrite: [ ]Mg5Al2Si6Al2O22(OH)2  
Magnesiogedrite: (Mg,Fe++)5Al2Si6Al2O22(OH)2

Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite).
Location: Bamble, Telemark, Norway. Scale: See Image.
© Rruff Database

Gedrite: [ ]Mg5Al2Si6Al2O22(OH)2  
Magnesiogedrite: (Mg,Fe++)5Al2Si6Al2O22(OH)2

Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite).
Location: Bamble, Telemark, Norway. Scale: See Image.
© Rruff Database

Georgbokiite: Cu5O2(SeO3)2Cl2

Comments: Deep reddish brown polished fragment of georgbokiite embedded in epoxy, co-type material.
Location: Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: Picture Size 300 µm.
© Rruff Database

Georgbokiite: Cu5O2(SeO3)2Cl2

Comments: Deep reddish brown polished fragment of georgbokiite embedded in epoxy, co-type material.
Location: Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: Picture Size 300 µm.
© Rruff Database

Hafnon: HfSiO4

Comments: Colorless unconsolidated hafnon grains, sample is from Speer and Cooper (1982).
Location: Synthetic from Alex Speer. Scale: See Image.
© Rruff Database

Hafnon: HfSiO4

Comments: Colorless unconsolidated hafnon grains, sample is from Speer and Cooper (1982).
Location: Synthetic from Alex Speer. Scale: See Image.
© Rruff Database