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Rare Mineral Species

Monday, 25 November 2024 06:00 PM

Introducing the "Rare Mineral Species" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including niobophyllite, nissonite, parnauite, pavonite, phosphophyllite, and plumbophyllite and more from places like Seal Lake, Labrador, Newfoundland, Canada, Boss mine, Goodsprings dist., Clark County, Nevada, United States, Majuba Hill mine, Pershing Co., Nevada, United States, Alaska mine, Poughkeepsie Gultch, San Juan Co., Colorado, United States, Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany, and Blue Bell mine, San Bernardino Co., California, United States.

SOLD

Niobophyllite

#BAC64995

Details
Data
Provenance
Resources

Locality: Seal Lake, Labrador, Newfoundland, Canada
Formula: K₂NaFe²⁺₇(NbTi)(Si₄O₁₂)₂O₂(OH)₄O
Availability: Sold
Size: 3 x 2 x 0.4 cm - Thumbnail

Massive black Niophyllite.

Niobophyllite

Formula: K₂NaFe²⁺₇(NbTi)(Si₄O₁₂)₂O₂(OH)₄O
Crystal System: Triclinic
Crystal Habit: Foliated, Flakes
Cleavage: Perfect, None, None
Luster: Vitreous - Adamantine
Color: brown
Class: Triclinic
Hardness: 3-4

Collection: Dr. Buford Nichols Collection

On Dakota Matrix: Previously Sold Niobophyllite
On Dakota Matrix: Other Available Niobophyllite
WebMineral: View Niobophyllite
Mindat: View Niobophyllite

SOLD

Nissonite

#JD64936

Details
Data
Provenance
Resources

Locality: Boss mine, Goodsprings dist., Clark County, Nevada, United States
Formula: Cu₂Mg₂(PO₄)₂(OH)₂·5H₂O
Availability: Sold
Size: 2 x 2 x 1.5 cm - Thumbnail
Tagged: phosphate , copper

Beautiful robin's egg blue crystal clusters.

Nissonite

Formula: Cu₂Mg₂(PO₄)₂(OH)₂·5H₂O
Crystal System: Monoclinic
Cleavage: Distinct, None, None
Color: bluish green
Streak: light green
Class: Monoclinic - Prismatic
Hardness: 2.5

Collection: John Dagenais Collection

Mineralpedia: View Nissonite
On Dakota Matrix: Previously Sold Nissonite
On Dakota Matrix: Other Available Nissonite
WebMineral: View Nissonite
Mindat: View Nissonite

SOLD

Parnauite

#JD64950

Details
Data
Provenance
Resources

Locality: Majuba Hill mine, Pershing Co., Nevada, United States
Formula: Cu₉(AsO₄)₂(SO₄)(OH)₁₀·7H₂O
Availability: Sold
Size: 6 x 3.5 x 3.5 cm - Sm Cabinet
Tagged: arsenate , copper

This is a good Parnauite specimen. The crystals are blocky in shape, green and velvety-looking.

Parnauite

Formula: Cu₉(AsO₄)₂(SO₄)(OH)₁₀·7H₂O
Crystal System: Orthorhombic
Crystal Habit: Rosette, Scaly, Encrustations
Cleavage: Good, None, None
Color: blue green, green, light blue
Streak: greenish white
Class: Orthorhombic - Disphenoidal
Hardness: 2

Collection: John Dagenais Collection

Mineralpedia: View Parnauite
On Dakota Matrix: Previously Sold Parnauite
On Dakota Matrix: Other Available Parnauite
WebMineral: View Parnauite
Mindat: View Parnauite

SOLD

Pavonite

#JD64952

Details
Data
Provenance
Resources

Locality: Alaska mine, Poughkeepsie Gultch, San Juan Co., Colorado, United States
Formula: AgBi₃S₅
Availability: Sold
Size: 2 x 1.2 x 1 cm - Thumbnail
Tagged: sulfide , silver

Granular metallic Pavonite grains.

Pavonite

Formula: AgBi₃S₅
Crystal System: Monoclinic
Crystal Habit: Massive, Bladed
Cleavage: Indistinct, None, None
Luster: Metallic
Color: lead gray, tin white
Streak: lead gray
Class: Monoclinic - Prismatic
Hardness: 2

Collection: John Dagenais Collection

On Dakota Matrix: Previously Sold Pavonite
On Dakota Matrix: Other Available Pavonite
WebMineral: View Pavonite
Mindat: View Pavonite

SOLD

Phosphophyllite

with Scholzite - #BN64938

Details
Data
Provenance
Resources

Locality: Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany
Formula: Zn₂Fe²⁺(PO₄)₂·4H₂O
Availability: Sold
Size: 6.5 x 4.5 x 3 cm - Sm Cabinet
Tagged: phosphate , pegmatite mineral

Faint green Phosphophyllite crystals to 2mm in a pocket 2cm wide. Some of the crystals show nice "fishtail" twinning. Associated are colorless Scholzite crystals with flat termination. Both minerals are rare zinc-bearing phosphates. Very nice piece. Outward from the vug is granular Hureaulite and blue Vivianite. Comes with a Dr. H. W. Eckert label.