Stilpnomelane Gallery

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Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Albite : Na[AlSi₃O₈]
	Broughton Mine (Luzcan mine; Carrière rang XV), St-Pierre-de-Broughton (West Broughton), Mégantic Co., Québec, Canada A rosette of brown stilpnomelane crystals, 1.5 mm across, associated with albite.
© Morphogenesis 2008	Photo ID: 204935 View Count: 63
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
	Clot della Mutta, Banchetta Mt., Chisonetto Valley, Sestriere, Chisone Valley, Torino Province, Piedmont, Italy Crystal size 28-35 mm. Collection and photo Giovanni Fraccaro.
© G.Fraccaro	Photo ID: 204764 View Count: 80
Stilpnomelane (Var: Ekmanite) : (Fe²⁺,Mg,Mn,Fe³⁺)₃(Si,Al)₄O₁₀(OH)₂·2H₂O
	Brunsjö Mine (Brunnsjö Mine), Grythyttan, Hällefors, Västmanland, Sweden Image width 10 mm. Collection and photo Giovanni Fraccaro.
© G.Fraccaro	Photo ID: 159034 View Count: 184
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Adularia : KAlSi₃O₈, Epidote : {Ca₂}{Al₂Fe³⁺}[O\|OH\|SiO₄\|Si₂O₇]
	Wallis (Valais), Switzerland 5.8 x 5.7 x 3.5 cm. Lustrous, black plates of stilpnomelane to 9 mm are aesthetically grouped together around a contrasting cluster of off-white adularia crystals on matrix richly covered with olive-green epidote crystals on this showy and fine specimen from Switzerland. Stilpnomelane is an uncommon layered silicate, related to mica and chlorite ...
© Rob Lavinsky	Photo ID: 139298 View Count: 152
Stilpnomelane (Var: Ferristilpnomelane) : K(Fe³⁺,Mg,Fe²⁺)₈(Si,Al)₁₂(O,OH)₂₇
	Darai-Pioz (Dara-i-Pioz; Dara-Pioz) Glacier, Alai (Alayskiy) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan Brown plates of ferristilpnomelane in alkaline granite matrix. Specimen size is 6x5x2.5 cm. Collected by Vladimir A. Karpenko in 1998. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 205440 View Count: 86
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
	Deer Isle mine, Deer Isle, Hancock Co., Maine, USA Harvard Mineralogical Museum, no. 112880. Label says: "Species: Stilpnomelane. Locality: Deer Isle mine, Dunham Point, Deer Isle, Hancock County, Maine. Provenance: collected by David B. Stewart doing thesis work ca. 1954. Acquired by: Clifford Frondel. Remarks: optics in Stewart (1956); unit cell parameters in Smith & Frondel (1968)." Scale is ...
© 2009 Peter Cristofono	Photo ID: 264633 View Count: 10
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Quartz (Var: Smoky Quartz) : SiO₂
	Lovejoy Gravel Pits (Lovejoy Pits), Albany, Carroll Co., New Hampshire, USA Golden stilpnomelane on a 9 mm smoky quartz crystal. Harvard Mineralogical Museum, no. 123545.
© 2009 Peter Cristofono	Photo ID: 222758 View Count: 42
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
	Franklin, Franklin Mining District, Sussex Co., New Jersey, USA FOV 6.5 x 4.5 mm. Collected by Modris B. late 1990s.on the Buckwheat dump. Very black, lustrous, rosettes of “stilpnomelane”. Identified visually by John Cianciulli (then curator of the Franklin Mineral Museum). Caveat: without analysis it’s not possible to say if this is stilpnomelane proper, franklinphilite, or lennilenapeite. According ...
	Photo ID: 201837 View Count: 65
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
	Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA Stilpnomelane – a surface coating of dark red to brown platy resinous looking patches on an 11 x 5 cm calcite, franklinite and sparse willemite matrix and associated with several other unidentified minerals. Franklin, NJ. See additional close-up photos.
© Christopher O'Neill	Photo ID: 155508 View Count: 111
Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O
	Sterling mine, Antwerp, Jefferson Co., New York, USA 5.4 x 4.4 x 1.7 cm. This classic and historic New York piece is from the Sterling Iron Mine at Antwerp. Foliated, two-toned gray plates of bladed stilpnomelane are set in matrix. Stilpnomelane is an uncommon layered silicate, and this is a very highly representative, old-time specimen. This old mine closed in 1910. Accompanied by an expertly ...
© Rob Lavinsky	Photo ID: 217448 View Count: 65

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Stilpnomelane Gallery

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O, Albite : Na[AlSi3O8]

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O

Stilpnomelane (Var: Ekmanite) : (Fe2+,Mg,Mn,Fe3+)3(Si,Al)4O10(OH)2·2H2O

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O, Adularia : KAlSi3O8, Epidote : {Ca2}{Al2Fe3+}[O|OH|SiO4|Si2O7]

Stilpnomelane (Var: Ferristilpnomelane) : K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O, Quartz (Var: Smoky Quartz) : SiO2

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O

Stilpnomelane : (K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Albite : Na[AlSi₃O₈]

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O

Stilpnomelane (Var: Ekmanite) : (Fe²⁺,Mg,Mn,Fe³⁺)₃(Si,Al)₄O₁₀(OH)₂·2H₂O

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Adularia : KAlSi₃O₈, Epidote : {Ca₂}{Al₂Fe³⁺}[O|OH|SiO₄|Si₂O₇]

Stilpnomelane (Var: Ferristilpnomelane) : K(Fe³⁺,Mg,Fe²⁺)₈(Si,Al)₁₂(O,OH)₂₇

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O, Quartz (Var: Smoky Quartz) : SiO₂

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O

Stilpnomelane : (K,Ca,Na)(Fe²⁺,Mg,Al,Fe³⁺)₈(Si,Al)₁₂(O,OH)₃₆ · nH₂O