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Gold #3 • Au

Gold #3 • Au

Weissbergite & Parapierrotite • TlSbS₂ & TlSb₅S₈

Weissbergite & Parapierrotite • TlSbS₂ & TlSb₅S₈

Epidote • Ca₂(Al,Fe)₃(SiO₄)₃(OH)

Epidote • Ca₂(Al,Fe)₃(SiO₄)₃(OH)

Uraninite & Soddyite • UO₂ & (UO₂)₂SiO₄ · 2H₂O

Uraninite & Soddyite • UO₂ & (UO₂)₂SiO₄ · 2H₂O

Gahnite • ZnAl₂O₄

Gahnite • ZnAl₂O₄

A Bunch of Radioactive Dinosaur Bones

A Bunch of Radioactive Dinosaur Bones

Dickthomssenite • Mg(V₂O₆) · 7H₂O

Dickthomssenite • Mg(V₂O₆) · 7H₂O

Tsumgallite #4 • GaO(OH)

Tsumgallite #4 • GaO(OH)

Lorándite & Realgar • TlAsS₂ & As₄S₄

Lorándite & Realgar • TlAsS₂ & As₄S₄

Magnesiopascoite • Ca₂Mg(V₁₀O₂₈) · 16H₂O

Magnesiopascoite • Ca₂Mg(V₁₀O₂₈) · 16H₂O

Sylvanite #8 • AgAuTe₄

Sylvanite #8 • AgAuTe₄

Barite #39 • BaSO₄

Barite #39 • BaSO₄

Rutheniridosmine • Ru, Ir & Os

Rutheniridosmine • Ru, Ir & Os

Rhodochrosite #6 • MnCO₃

Rhodochrosite #6 • MnCO₃

Haxtun #1 & #2

Haxtun #1 & #2

What does Uranium look like?

What does Uranium look like?

Purpurite • Mn³⁺(PO₄)

Purpurite • Mn³⁺(PO₄)

Silver Wire • Ag

Silver Wire • Ag

Phenakite on Smoky Quartz • Be₂SiO₄ on SiO₂

Phenakite on Smoky Quartz • Be₂SiO₄ on SiO₂

Stromeyerite • AgCuS

Stromeyerite • AgCuS

Cummingtonite • Mg₇(Si₈O₂₂)(OH)₂

Cummingtonite • Mg₇(Si₈O₂₂)(OH)₂

Chalcopyrite & Tetrahedrite • CuFeS₂ & (Cu,Fe)₁₂Sb₄S₁₃

Chalcopyrite & Tetrahedrite • CuFeS₂ & (Cu,Fe)₁₂Sb₄S₁₃

Talnakhite • Cu₉(Fe,Ni)₈S₁₆

Talnakhite • Cu₉(Fe,Ni)₈S₁₆

Krennerite & Hessite • Au₃AgTe₈ & Ag₂Te

Krennerite & Hessite • Au₃AgTe₈ & Ag₂Te

Covellite • CuS

Covellite • CuS

Ureilite NWA #11890

Ureilite NWA #11890

Tennantite • Cu₆(Cu₄C²⁺₂)As₄S₁₂S

Tennantite • Cu₆(Cu₄C²⁺₂)As₄S₁₂S

Marmatite • (Zn,Fe)S

Marmatite • (Zn,Fe)S

Tourmaline v Rubellite #4 • Na(Li₁.₅Al₁.₅)Al₆Si₆O₁₈(BO₃)₃(OH)₄

Tourmaline v Rubellite #4 • Na(Li₁.₅Al₁.₅)Al₆Si₆O₁₈(BO₃)₃(OH)₄

Smoky Quartz #4 • SiO₂

Smoky Quartz #4 • SiO₂

Rhodochrosite #5 • MnCO₃

Rhodochrosite #5 • MnCO₃

Tsumgallite #3 • GaO(OH)

Tsumgallite #3 • GaO(OH)

Lepidolite #3 • KLi₂AlSi₄O₁₀F(OH)

Lepidolite #3 • KLi₂AlSi₄O₁₀F(OH)

Cobaltlotharmeyerite • CaCo₂(AsO₄)₂ · 2H₂O

Cobaltlotharmeyerite • CaCo₂(AsO₄)₂ · 2H₂O

Domeykite • Cu₃As

Domeykite • Cu₃As

Parapierrotite • TlSb₅S₈

Parapierrotite • TlSb₅S₈

Calaverite #3 • AuTe

Calaverite #3 • AuTe

Keiviite-Y • Y₂Si₂O₇

Keiviite-Y • Y₂Si₂O₇

Amethyst, Hematite & Fluorite • SiO₂, Fe₂O₃ & CaF

Amethyst, Hematite & Fluorite • SiO₂, Fe₂O₃ & CaF

Sphalerite, Chalcopyrite & Pyrite • ZnS, CuFeS₂ & FeS₂

Sphalerite, Chalcopyrite & Pyrite • ZnS, CuFeS₂ & FeS₂

Sylvanite #7 • AgAuTe₄

Sylvanite #7 • AgAuTe₄

Rhodochrosite #4 • MnCO₃

Rhodochrosite #4 • MnCO₃

Kolbeckite • ScPO₄ · 2H₂O

Kolbeckite • ScPO₄ · 2H₂O

Smoky Quartz #3 • SiO₂

Smoky Quartz #3 • SiO₂

Churchite-Y • Y(PO₄) · 2H₂O

Churchite-Y • Y(PO₄) · 2H₂O

Aquamarine #2 • Be₃Al₂Si₆O₁₈

Aquamarine #2 • Be₃Al₂Si₆O₁₈

Amethyst #12 • SiO₂

Amethyst #12 • SiO₂

Azurite • Cu₃(CO₃)₂(OH)₂

Azurite • Cu₃(CO₃)₂(OH)₂

Barite #38 • BaSO₄

Barite #38 • BaSO₄

Sylvanite #6 • AgAuTe₄

Sylvanite #6 • AgAuTe₄

Galena #3 • PbS

Galena #3 • PbS

The River in Palisade

The River in Palisade

Smoky Quartz on Microcline • SiO₂ on K(AlSi₃O₈)

Smoky Quartz on Microcline • SiO₂ on K(AlSi₃O₈)

Goethite #2 • FeO

Goethite #2 • FeO

Vanadinite #2 • Pb₅(VO₄)₃Cl

Vanadinite #2 • Pb₅(VO₄)₃Cl

Galena, Pyrite & Quartz #4 • PbS, FeS₂ & SiO₂

Galena, Pyrite & Quartz #4 • PbS, FeS₂ & SiO₂

Pascoite, Rossite & Metarossite • Ca₂Ca(V₁₀O₂₈) · 17H₂O

Pascoite, Rossite & Metarossite • Ca₂Ca(V₁₀O₂₈) · 17H₂O

Miargyrite • AgSbS₂

Miargyrite • AgSbS₂

Gold on Sphalerite • Au on ZnS

Gold on Sphalerite • Au on ZnS

Pyrite on Sphalerite • FeS₂ on ZnS

Pyrite on Sphalerite • FeS₂ on ZnS

Roasted Gold • Au

Roasted Gold • Au

Pt 6: Gold!

Pt 6: Gold!

Pt 5: Agates, ❤️s & Pisolites?

Pt 5: Agates, ❤️s & Pisolites?

Erythrite on Safflorite • Co₃(AsO₄)₂·8H₂O on (Co,Ni,Fe)As₂

Erythrite on Safflorite • Co₃(AsO₄)₂·8H₂O on (Co,Ni,Fe)As₂

Calaverite #2 • AuTe₂

Calaverite #2 • AuTe₂

Pt 4: More rocks!

Pt 4: More rocks!

Amethyst, Hematite & Fluorite

Amethyst, Hematite & Fluorite

Pt 3: So many rocks!

Pt 3: So many rocks!

Native Silver, Acanthite & Barite #3 • Ag, Ag₂S & BaSO₄

Native Silver, Acanthite & Barite #3 • Ag, Ag₂S & BaSO₄

Vanadinite on Barite #4 • Pb₅(VO₄)₃Cl on BaSO₄

Vanadinite on Barite #4 • Pb₅(VO₄)₃Cl on BaSO₄

Galena, Pyrite & Quartz #3 • PbS, FeS₂ & SiO₂

Galena, Pyrite & Quartz #3 • PbS, FeS₂ & SiO₂

Trilobites

Trilobites

Zunyite #2 • Al₁₃S₅O₂₀(OH,F)₁₈Cl

Zunyite #2 • Al₁₃S₅O₂₀(OH,F)₁₈Cl

Dinosaur Bone #6

Dinosaur Bone #6

Austinite #2 • CaZnAsO₄(OH)

Austinite #2 • CaZnAsO₄(OH)

Pt 2: Agates, agates, agates...

Pt 2: Agates, agates, agates...

Malachite & Chalcopyrite • Cu₂(CO₃)(OH)₂ & CuFeS₂

Malachite & Chalcopyrite • Cu₂(CO₃)(OH)₂ & CuFeS₂

Vanadinite on Barite #3 • Pb₅(VO₄)₃Cl on BaSO₄

Vanadinite on Barite #3 • Pb₅(VO₄)₃Cl on BaSO₄

Galena, Pyrite & Quartz #2 • PbS, FeS₂ & SiO₂

Galena, Pyrite & Quartz #2 • PbS, FeS₂ & SiO₂

Renierite • (Cu¹⁺,Zn)₁₁Fe₄(Ge⁴⁺,As⁵⁺)₂S₁₆

Renierite • (Cu¹⁺,Zn)₁₁Fe₄(Ge⁴⁺,As⁵⁺)₂S₁₆

Lepidolite #2 • KLi₂AlSi₄O₁₀F(OH)

Lepidolite #2 • KLi₂AlSi₄O₁₀F(OH)

Limonite on Smoky Quartz • Fe³⁺O(OH) on SiO₂

Limonite on Smoky Quartz • Fe³⁺O(OH) on SiO₂

Silver & Copper • AgCu

Silver & Copper • AgCu

Triceratops Tooth

Triceratops Tooth

Rheniite #3 • ReS₂

Rheniite #3 • ReS₂

Barite #37 • BaSO₄

Barite #37 • BaSO₄

Amber (Succinite)

Amber (Succinite)

Pascoite • Ca₂Ca(V₁₀O₂₈) · 17H₂O

Pascoite • Ca₂Ca(V₁₀O₂₈) · 17H₂O

Zircons • Zr(SiO₄)

Zircons • Zr(SiO₄)

Pt 1: Agates, Garnets & Oreos

Pt 1: Agates, Garnets & Oreos

Pollucite • (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Pollucite • (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Sylvanite #5 • AgAuTe₄

Sylvanite #5 • AgAuTe₄

Barite #35 • BaSO₄

Barite #35 • BaSO₄

Rhodochrosite #3 • MnCO₃

Rhodochrosite #3 • MnCO₃

Davidite-La • La(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈

Davidite-La • La(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈

Pyroxmangite • Mn²⁺SiO₃

Pyroxmangite • Mn²⁺SiO₃

Barite #34 • BaSO₄

Barite #34 • BaSO₄

Graphite • C

Graphite • C

Barite in the Bookcliffs

Barite in the Bookcliffs

Barite in the Bookcliffs (no music)

Barite in the Bookcliffs (no music)

Fluorite, Wulfenite & Mimetite • CaF₂, PbMoO₄ & Pb₅(AsO₄)₃Cl

Fluorite, Wulfenite & Mimetite • CaF₂, PbMoO₄ & Pb₅(AsO₄)₃Cl

The Tabeguache Trail

The Tabeguache Trail

The Tabeguache Trail (no music)

The Tabeguache Trail (no music)

Chalcedony • SiO₂

Chalcedony • SiO₂

Pyroxmangite • Mn²⁺SiO₃

Pyroxmangite • Mn²⁺SiO₃

Phosinaite-(Ce) on Ussingite • Na₁₃Ca₂(Ce,La,Th,Nd,Pr)(Si₄O₁₂)(PO₄)₄ on Na₂AlSi₃O₈OH

Phosinaite-(Ce) on Ussingite • Na₁₃Ca₂(Ce,La,Th,Nd,Pr)(Si₄O₁₂)(PO₄)₄ on Na₂AlSi₃O₈OH

Sulfur • S

Sulfur • S

Perroudite • Hg₅Ag₄S₅(I,Br)₂Cl₂

Perroudite • Hg₅Ag₄S₅(I,Br)₂Cl₂

Euxenite-Y • (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

Euxenite-Y • (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

Fernandinite - (Ca,K)(V⁵⁺,V⁴⁺,Fe²⁺)₈O₂₀ · 10H₂O

Fernandinite - (Ca,K)(V⁵⁺,V⁴⁺,Fe²⁺)₈O₂₀ · 10H₂O

Fluorite - CaF₂

Fluorite - CaF₂

Goethite on Smoky Quartz - Fe³⁺O(OH) on SiO₂

Goethite on Smoky Quartz - Fe³⁺O(OH) on SiO₂

Cascandite - CaScSi₃O₈(OH)

Cascandite - CaScSi₃O₈(OH)

Spodumene - LiAlSi₂O₆

Spodumene - LiAlSi₂O₆

Native Silver & Acanthite on Barite - Ag, Ag₂S & BaSO₄

Native Silver & Acanthite on Barite - Ag, Ag₂S & BaSO₄

Calcite on Fluorite - CaCO₃ on CaF₂

Calcite on Fluorite - CaCO₃ on CaF₂

Sylvanite - AgAuTe₄

Sylvanite - AgAuTe₄

Thortveitite - Sc₂Si₂O₇

Thortveitite - Sc₂Si₂O₇

Topaz on Zinnwaldite - Al₂(SiO₄)(F,OH)₂ on KLi₂Al(Si₄O₁₀)(F,OH)₂

Topaz on Zinnwaldite - Al₂(SiO₄)(F,OH)₂ on KLi₂Al(Si₄O₁₀)(F,OH)₂

Chalcopyrite, Galena & Sphalerite - CuFeS₂, PbS & ZnS

Chalcopyrite, Galena & Sphalerite - CuFeS₂, PbS & ZnS

Heulandite (Na/Ca/K)₅₋₆[Al₈₋₉ Si₂₇₋₂₈ O₇₂] · nH₂O

Heulandite (Na/Ca/K)₅₋₆[Al₈₋₉ Si₂₇₋₂₈ O₇₂] · nH₂O

Cetineite - (K,Na)₆Sb³⁺₁₂(Sb³⁺S₃)₂O₁₈(OH)₀.₅ · 5H₂O

Cetineite - (K,Na)₆Sb³⁺₁₂(Sb³⁺S₃)₂O₁₈(OH)₀.₅ · 5H₂O

Pentlandite - (Ni,Fe)₉S₈

Pentlandite - (Ni,Fe)₉S₈

Pickeringite - MgAl₂(SO₄)₄·22(H₂O)

Pickeringite - MgAl₂(SO₄)₄·22(H₂O)

Tanzanite, Pyrite & Graphite - Ca₂Al₃(SiO₄)(Si₂O₇)O(OH)(Cr,Sr), FeS₂ & C

Tanzanite, Pyrite & Graphite - Ca₂Al₃(SiO₄)(Si₂O₇)O(OH)(Cr,Sr), FeS₂ & C

Cosalite, Pyrite & Gold - Pb₂Bi₂S₅, FeS₂ & Au

Cosalite, Pyrite & Gold - Pb₂Bi₂S₅, FeS₂ & Au

Turquoise - CuAl₆(PO₄)₄(OH)₈ · 4H₂O

Turquoise - CuAl₆(PO₄)₄(OH)₈ · 4H₂O

Cornetite - Cu₃(PO₄)(OH)₃

Cornetite - Cu₃(PO₄)(OH)₃

Petedunnite - Ca(Zn,Mn²⁺,Mg,Fe²⁺)Si₂O₆

Petedunnite - Ca(Zn,Mn²⁺,Mg,Fe²⁺)Si₂O₆

Psilomelane - (Ba,H₂O)₂Mn₅O₁₀

Psilomelane - (Ba,H₂O)₂Mn₅O₁₀

Roscoelite - K(V³⁺,Al)₂(AlSi₃O₁₀)(OH)₂

Roscoelite - K(V³⁺,Al)₂(AlSi₃O₁₀)(OH)₂

Uralite - Ca₂(MgₓFe²⁺ᵧ)(Si,Al,Ti)₈O₂₂(OH,F,Cl,O)₂

Uralite - Ca₂(MgₓFe²⁺ᵧ)(Si,Al,Ti)₈O₂₂(OH,F,Cl,O)₂

Beudantite - PbFe₃(AsO₄)(SO₄)(OH)₆

Beudantite - PbFe₃(AsO₄)(SO₄)(OH)₆

Zircon - Zr(SiO₄)

Zircon - Zr(SiO₄)

Vanadinite on Barite - Pb₅(VO₄)₃Cl on BaSO₄

Vanadinite on Barite - Pb₅(VO₄)₃Cl on BaSO₄

Bavenite - Ca₄Be₂Al₂Si₉O₂₆(OH)₂

Bavenite - Ca₄Be₂Al₂Si₉O₂₆(OH)₂

Prosopite - CaAl₂F₆(OH)₂

Prosopite - CaAl₂F₆(OH)₂

Bustamite - CaMn²⁺(Si₂O₆)

Bustamite - CaMn²⁺(Si₂O₆)

Cassiterite on Zinnwaldite - SnO₂ on KLi₂Al(Si₄O₁₀)(F,OH)₂

Cassiterite on Zinnwaldite - SnO₂ on KLi₂Al(Si₄O₁₀)(F,OH)₂

Barite (Baryte) #36 - BaSO₄

Barite (Baryte) #36 - BaSO₄

Diamonds - C

Diamonds - C

Kotulskite - Pd(Te,Bi)

Kotulskite - Pd(Te,Bi)

Vesuvianite - Ca₁₀(Mg,Fe)₂Al₄(SiO₄)₅(Si₂O₇)₂(OH,F)₄

Vesuvianite - Ca₁₀(Mg,Fe)₂Al₄(SiO₄)₅(Si₂O₇)₂(OH,F)₄

Smoky Quartz - SiO₂

Smoky Quartz - SiO₂

Galena - PbS

Galena - PbS

'Ruby Jack' Sphalerite - ZnS

'Ruby Jack' Sphalerite - ZnS

Avon & Dotsero (no music)

Avon & Dotsero (no music)

Avon & Dotsero

Avon & Dotsero

Scheelite in Quartz - CaWO₄ in SiO₂

Scheelite in Quartz - CaWO₄ in SiO₂

Pyrite & Fluorite - FeS₂ & CaF₂

Pyrite & Fluorite - FeS₂ & CaF₂

Topaz - Al₂(SiO₄)(F,OH)₂

Topaz - Al₂(SiO₄)(F,OH)₂

Hemimorphite - Zn₄Si₂O₇(OH)₂ · H₂O

Hemimorphite - Zn₄Si₂O₇(OH)₂ · H₂O

Rhenian Molybdenite - (Mo,Re)S₂

Rhenian Molybdenite - (Mo,Re)S₂

Chabazite - (Ca,K₂,Na₂,Mg)Al₂Si₄O₁₂ • 6H₂O

Chabazite - (Ca,K₂,Na₂,Mg)Al₂Si₄O₁₂ • 6H₂O

Austinite - CaZnAsO₄(OH)

Austinite - CaZnAsO₄(OH)

Barite (Baryte) #33 - BaSO₄

Barite (Baryte) #33 - BaSO₄

Berzelianite - Cu₂Se

Berzelianite - Cu₂Se

Churchite-Y - Y(PO₄) · 2H₂O

Churchite-Y - Y(PO₄) · 2H₂O

Graphite - C

Graphite - C

Rheniite - ReS₂

Rheniite - ReS₂

Gold Nugget #2 - Au

Gold Nugget #2 - Au

Pollucite - (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Pollucite - (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Columbite-(Fe) - Fe²⁺Nb₂O₆

Columbite-(Fe) - Fe²⁺Nb₂O₆

Native Osmium - Os, Ir & Ru

Native Osmium - Os, Ir & Ru

Galena & Pyrite on Quartz - PbS & FeS₂ on SiO₂

Galena & Pyrite on Quartz - PbS & FeS₂ on SiO₂

Iodargyrite - AgI

Iodargyrite - AgI

Erythrite - Co₃(AsO₄)₂ · 8H₂O

Erythrite - Co₃(AsO₄)₂ · 8H₂O

Epidote - Ca₂Al₂(Fe³⁺)(SiO₄)(Si₂O₇)O(OH)

Epidote - Ca₂Al₂(Fe³⁺)(SiO₄)(Si₂O₇)O(OH)

Painted Colorado Rock

Painted Colorado Rock

Phenakite - Be₂SiO₄

Phenakite - Be₂SiO₄

Callaghanite - Cu₂Mg₂(CO₃)(OH)₆ · 2H₂O

Callaghanite - Cu₂Mg₂(CO₃)(OH)₆ · 2H₂O

Bazzite - Be₃Sc₂(Si₆O₁₈)

Bazzite - Be₃Sc₂(Si₆O₁₈)

San Rafael Swell Agates

San Rafael Swell Agates

Ferrierite-NH₄ - (NH₄Mg₀.₅)₅(Al₅Si₃₁O₇₂) · 22H₂O

Ferrierite-NH₄ - (NH₄Mg₀.₅)₅(Al₅Si₃₁O₇₂) · 22H₂O

Françoisite-(Nd) - (Nd,Ce,Sm)(UO₂)₃(PO₄)₂O(OH) · 6H₂O

Françoisite-(Nd) - (Nd,Ce,Sm)(UO₂)₃(PO₄)₂O(OH) · 6H₂O

Amethyst around a Degassing Vent

Amethyst around a Degassing Vent

Tsumgallite - GaO(OH)

Tsumgallite - GaO(OH)

Glitter & Gold

Glitter & Gold

Sylvanite - AgAuTe₄

Sylvanite - AgAuTe₄

Gold on Pyrite & Quartz - Au on FeS₂ & SiO₂

Gold on Pyrite & Quartz - Au on FeS₂ & SiO₂

Quartz & Pyrite on Tetrahedrite - SiO₂ & FeS₂ on (CuFeZnAg)₁₂Sb₄S₁₃

Quartz & Pyrite on Tetrahedrite - SiO₂ & FeS₂ on (CuFeZnAg)₁₂Sb₄S₁₃

Dinosaur bones

Dinosaur bones

Quartz & Hematite - SiO₂ & Fe₂S₃

Quartz & Hematite - SiO₂ & Fe₂S₃

Rhodochrosite - MnCO₃

Rhodochrosite - MnCO₃

Gold Nugget #1 - Au

Gold Nugget #1 - Au

Sphalerite - ZnS

Sphalerite - ZnS

Zunyite - Al₁₃S₅O₂₀(OH,F)₁₈Cl

Zunyite - Al₁₃S₅O₂₀(OH,F)₁₈Cl

Barite (Baryte) Crystal #32 - BaSO₄

Barite (Baryte) Crystal #32 - BaSO₄

Kimberlite - Diamond Ore

Kimberlite - Diamond Ore

Goethite - FeO(OH)

Goethite - FeO(OH)

Roquesite - CuInS₂

Roquesite - CuInS₂

Cooperite & Vysotskite - PtS & PdS

Cooperite & Vysotskite - PtS & PdS

Schirmerite - PbAgBi₃S₆

Schirmerite - PbAgBi₃S₆

Quartz on Stibnite - SiO₂ & Sb₂S₃

Quartz on Stibnite - SiO₂ & Sb₂S₃

Barite (Baryte) Crystal #30 - BaSO₄

Barite (Baryte) Crystal #30 - BaSO₄

Rhodochrosite - MnCO₃

Rhodochrosite - MnCO₃

Calaverite - AuTe₂

Calaverite - AuTe₂

Aquamarine - Be₃Al₂Si₆O₁₈

Aquamarine - Be₃Al₂Si₆O₁₈

Pollucite & Lepidolite - (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Pollucite & Lepidolite - (Cs,Na)₂(Al₂Si₄O₁₂) · 2H₂O

Davidite-La - La(YU)Fe₂(TiFeCrV)₁₈(OHF)₃₈

Davidite-La - La(YU)Fe₂(TiFeCrV)₁₈(OHF)₃₈