's Image Gallery

Ferrinatrite: Na3Fe+++(SO4)3·3(H2O)

Comments: White spherical aggregates of ferrinatrite with gypsum needles.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrinatrite: Na3Fe+++(SO4)3·3(H2O)  
Rozenite: Fe++SO4·4(H2O)  
Copiapite: Fe++Fe+++4(SO4)6(OH)2·20(H2O)

Comments: White powdery rozenite coating with yellow ferrinatrite on purple copiapite.
Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferripedrizite: NaLi2(Fe+++2Mg2Li)Si8O22(OH)2

Comments: Black, bladed ferripedrizite crystals.
Location: East Pedriza Massif, Sierra de Guadarrama, Spain. Scale: See Image.
© Rruff Database

Ferripyrophyllite: Fe+++2Si4O10(OH)2

Comments: Brown crystal prism of ferripyrophyllite in earthy matrix.
Location: Talagai, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrisicklerite: Li(Fe+++,Mn++)PO4

Comments: Dark brown massive ferrisicklerite.
Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferristrunzite: Fe+++Fe+++2(PO4)2(OH)3·5(H2O)

Comments: Radiating yellow crystals of ferristrunzite on black matrix.
Location: Blaton, Hainaut (Henegouwen; Hennegau) Province, Belgium. Scale: 35x25x15 mm.
© John Betts - Fine Minerals

Ferrisurite: (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Fe,Al)2Si4O10(OH)2]·n(H2O)

Comments: Olive-green crystalline ferrisurite, with radiating structure.
Location: Shirley Ann Claim, near Darwin, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferritaramite: Na(CaNa)(Fe++,Mg)3Fe+++2[Si6Al2O22](OH)2  
Potassic-ferritaramite:

Comments: Lightly to moderately etched, blocky, jet black ferritaramite (potassic-ferritaramite is a not approved mineral name).
Location: Niaslo, Basha Valley, Baltistan, Pakistan. Scale: 5 x 1.5 x 0.3 cm.
© John Veevaert

Ferritschermakite: Ca2(Fe++,Mg)3Al2(Si7Al)O22(OH)2

Comments: Dark amphibolite composed of aggregates of ferritschermakite crystals.
Location: Elisenvaara S-W Karelia, Russia. Scale: Specimen size: 12x10x6 mm.
© Sergey Vasiliev / Systematic Mineralogy

Ferritungstite: (K,Ca,Na)(W++++++,Fe+++)2(O,OH)6·(H2O)

Comments: Small, yellow crystals of ferritungstite on matrix.
Location: Clara Mine, Oberwolfach, Wolfach Valley, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferriwinchite: ([ ],Na)(Na,Ca)2(Mg, Fe++)4Fe+++[Si8O22](OH)2

Comments: Deep black-blue bladed single ferriwinchite crystals embedded in white dolomite.
Location: Imerina, Madagascar. Scale: See Image.
© Rruff Database

Ferro-actinolite: [ ]Ca2Fe++5Si8O22(OH)2

Comments: Prismatic crystals of ferro-actinolite showing terminal crystal faces..
Location: Astor, Shigar Valley Pakistan. Scale: 4.5 x 3.3 x 4.2 cm.
© Fabre Minerals

Ferro-aluminotschermakite: Ca2Fe++3Al2(Si7Al)O22(OH)2

Comments: Minute dark green translucent crystals of ferro-aluminotschermakite(?).
Location: Aris Quarries (Ariskop Quarry; Railway Quarry), Aris, Windhoek, Windhoek District, Khomas Region, Namibia. Scale: Picture Size 0.4 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferro-anthophyllite: [ ]Fe++7Si8O22(OH)2

Comments: TEM image showing a small percentage of Pnma ferroanthophyllite of similar composition is present as thin slabs intergrown parallel to (100) of grunerite and as individual µ-size crystals.
Location: Rockport grunerite, Massachusetts, USA. (AmMin, v86:1252). Scale: See Image.
© American Mineralogist

Ferro-eckermannite: NaNa2(Fe++4Al)Si8O22(OH)2

Comments: Massive dark green ferro-eckermannite with feldspar.
Location: Khan Bogdo (Khan-Bogdinskii) Massif, Gobi Desert, Mongolia. Scale: Picture Size 7 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferro-edenite: NaCa2Fe++5Si7AlO22(OH)2  
Wohlerite: NaCa2(Zr,Nb)Si2O7(O,OH,F)2

Comments: Transparent yellow wöhlerite crystals embedded in pink feldspar and black mica matrix with black ferro-edenite (var. barkevikite).
Location: Langesundsfjorden, Sandoya Island, Porsgrunn, Norway. Scale: Specimen Size: 5x5x3.5 cm.
© John Betts - Fine Minerals

Ferroalluaudite: NaCaFe++(Fe++,Mn,Fe+++,Mg)2(PO4)3

Comments: Dark green crystalline ferro alluaudite in pegmatite.
Location: Chandler Mills Mine, Newport, Sullivan County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrobustamite: Ca(Fe++,Ca,Mn)Si2O6

Comments: Grayish crystalline ferrobustamite with white calcite, golden colored phlogopite and green actinolite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferrocarpholite: (Fe++,Mg)Al2Si2O6(OH)4

Comments: Pale yellow radiating ferrocarpholite crystals.
Location: Krasno, Zapadocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferroceladonite: K2Fe++Fe+++Si8O20(OH)4

Comments: Micaceous ferro celadonite, comprising schistose rock.
Location: Mikhailovsky Mine, Malkhan Range, Central Transbaikalia, Chita District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species