Recently Released New Additions
Mixed Minerals
Introducing the "Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including joseite, magnesioferrite, marcasite, masuyite, monticellite, and nagyagite and more from places like Glacier Gulch, Smithers, British Columbia, Canada, Commercial quarry, Crestmore, Riverside Co., California, United States, Cuba City dist., Lafayette Co., Wisconsin, United States, Shinkolobwe, Katanga, Democratic Republic of Congo, and Săcărâmb (Nagyág in Hungary), Romania.
Joseite
- $125.00 - Available
- Add to Cart
- Add to Favorites
- Locality
- Glacier Gulch, Smithers, British Columbia, Canada
- Formula
- Bi4TeS2
- Availability
- Available
- Price
- $125.00
- Size
- 3 x 2 x 1.2 cm - Thumbnail
- Tagged
- sulfide , tellurium , bismuth
- Special Info
- Antique Specimen
Flashy and silvery crystals throughout mass. It's another oldie from the Seaman with a Ward's label. Comes with that little vial full of metallic crystal grains.
Joseite
- Formula
- Bi4(S,Te)3
- Crystal System
- Trigonal
- Luster
- Metallic
- Color
- gray, grayish black
- Class
- Trigonal - Hexagonal Scalenohedral
- Hardness
- 2
- Collection
- Ex. A.E. Seaman Museum
- Special Info
- Antique Specimen
- On Dakota Matrix
- Previously Sold Joseite
- On Dakota Matrix
- Other Available Joseite
- WebMineral
- View Joseite
- Mindat
- View Joseite
Marcasite
- Sold
- Add to Favorites
- Locality
- Cuba City dist., Lafayette Co., Wisconsin, United States
- Formula
- FeS2
- Availability
- Sold
- Size
- 7 x 6 x 2 cm - Sm Cabinet
- Tagged
- sulfide
- Special Info
- Antique Specimen
This is an impossible mineral to obtain from this locality. This specimen features good bladed crystals of Marcasite to over 1cm and many show the cockscomb habit.
Marcasite
- Formula
- FeS2
- Crystal System
- Orthorhombic
- Crystal Habit
- Tabular, Stalactitic, Globular
- Cleavage
- Indistinct, None, None
- Luster
- Metallic
- Color
- bronze, light brass yellow, tin white
- Streak
- gray brownish black
- Class
- Orthorhombic - Dipyramidal
- Fracture
- Uneven
- Hardness
- 6-6.5
- Collection
- Ex. A.E. Seaman Museum
- Special Info
- Antique Specimen
- Mineralpedia
- View Marcasite
- On Dakota Matrix
- Previously Sold Marcasite
- On Dakota Matrix
- Other Available Marcasite
- WebMineral
- View Marcasite
- Mindat
- View Marcasite
Masuyite
- Sold
- Add to Favorites
- Locality
- Shinkolobwe, Katanga, Democratic Republic of Congo
- Formula
- Pb(UO2)3O3(OH)2·3H2O
- Availability
- Sold
- Size
- 7 x 4 x 2.5 cm - Sm Cabinet
- Special Info
- Poisonous!!
- Special Info
- Type Locality
Orange massive Masuyite with some glassy crystals seen in the third photo. The patch in the middle is low-grade Studtite.
Masuyite
- Formula
- Pb(UO2)3O3(OH)2·3H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Pseudo Hexagonal, Twinning Common
- Cleavage
- Perfect, Indistinct, None
- Luster
- Vitreous (Glassy)
- Color
- brown orange, carmine red, red, red orange
- Class
- Monoclinic - Domatic
- Hardness
- -
- Collection
- Ex. William Pinch
- Special Info
- Poisonous!!
- Special Info
- Type Locality
- Mineralpedia
- View Masuyite
- On Dakota Matrix
- Previously Sold Masuyite
- On Dakota Matrix
- Other Available Masuyite
- WebMineral
- View Masuyite
- Mindat
- View Masuyite
Nagyagite
- $375.00 - Available
- Add to Cart
- Add to Favorites
- Locality
- Săcărâmb (Nagyág in Hungary), Romania
- Formula
- [Pb(Pb,Sb)S2][(Au,Te)]
- Availability
- Available
- Price
- $375.00
- Size
- 6 x 4.5 x 1.7 cm - Sm Cabinet
- Tagged
- sulfide , silver , gold
- Special Info
- Antique Specimen
- Special Info
- Type Locality
Dark grey to black crystal plates of Nagyagite with rod-like crystals of Hessite. See prov. tab for old label. There are three clusters of crystals to 4mm in vugs. Nagyagite from Nagyag is incredibly difficult mineral to obtain.
Nagyagite
- Formula
- [Pb(Pb,Sb)S2][(Au,Te)]
- Crystal System
- Tetragonal
- Crystal Habit
- Granular, Lamellar, Platy
- Cleavage
- Perfect, None, None
- Luster
- Metallic
- Color
- lead gray, black
- Streak
- gray black
- Class
- Tetragonal - Disphenoidal
- Fracture
- Hackly
- Hardness
- 1.5-2
- Collection
- Ex. A.E. Seaman Museum
- Special Info
- Antique Specimen
- Special Info
- Type Locality
- Mineralpedia
- View Nagyagite
- On Dakota Matrix
- Previously Sold Nagyagite
- On Dakota Matrix
- Other Available Nagyagite
- WebMineral
- View Nagyagite
- Mindat
- View Nagyagite
