Recently Released New Additions
Mix Minerals
Introducing the "Mix Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including alstonite, calcite, copper, and legrandite and more from places like New Brancepeth Colliery, Deerness Valley, Durham, England, Tsumeb mine, Tsumeb, Namibia, and Mina Ojuela, Mapimi, Durango, Mexico.
Alstonite
- $145.00 - Available
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- Locality
- New Brancepeth Colliery, Deerness Valley, Durham, England
- Formula
- BaCa(CO3)2
- Availability
- Available
- Price
- $145.00
- Size
- 6.5 x 5 x 3.5 cm - Sm Cabinet
- Tagged
- carbonate
Good coverage of colorless to white, 1-2mm, pseudohexagonal dipyramids showing horizonatal striations. These crystals are perfectly formed and euhedral. Alstonite is the dimorph of barytocalcite. and also paralstonite. Swap Ca and Ba in the formula and you have Barytocalcite. Drop calcium all together and you get Witherite, which forms the bulk of this specimen. The Alsonite crystallization follows natural voids between Witherite crystals. The Witherite occurs as discoidal crystals to 1.3cm, but there are just a few of these. The rest of the Witherite are large anhedral forms seemingly deformed by etching. Cool specimen. It is similair to the Witherite pictured on Mindat from this locality. Note that Alstonite looks like it occurs on that one too if you look closely.
Alstonite
- Formula
- BaCa(CO3)2
- Crystal System
- Triclinic
- Crystal Habit
- Euhedral Crystals, Pseudo Hexagonal
- Cleavage
- Imperfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- colorless, gray, white, pink
- Streak
- white
- Class
- Triclinic
- Fracture
- Uneven
- Hardness
- 4-4.5
- Collection
- Phillips Collection
- Mineralpedia
- View Alstonite
- On Dakota Matrix
- Previously Sold Alstonite
- On Dakota Matrix
- Other Available Alstonite
- WebMineral
- View Alstonite
- Mindat
- View Alstonite
