lansfordite
Sign in to saveLansfordite is a mineral of magnesium carbonate (). It represents the pentahydrate of magnesium carbonate, and has the total formula . Landsfordite was discovered in 1888 in a coal mine in Lansford, Pennsylvania. It crystallizes in the monoclinic system (space group P21/c) and typically occurs as colorless to white prismatic crystals and stalactitic masses. It is a soft mineral, Mohs hardness of 2.5, with a low specific gravity of 1.7. It is transparent to translucent with refractive indices of 1.46 to 1.51. The mineral will effloresce at room temperature, producing nesquehonite.
In the Vinony graph
Within Vinony's link graph, lansfordite is referenced by 7 other articles, and connects out to Mohs scale of mineral hardness, relative density and coal.
Vinony files it under Carbonate minerals, Geology of Pennsylvania and Magnesium minerals.
Its subject is documented across 9 Wikipedia language editions.
Key facts
- Mineral.name
- Lansfordite
- Mineral.image
- Lansfordite.jpg
- Mineral.alt
- Photo of magnesium crystals
- Mineral.caption
- Lansfordite crystals in Switzerland
- Mineral.category
- Carbonates
- Mineral.IMAsymbol
- Lfd
- Mineral.molweight
- 174.39
- Mineral.strunz
- 5/D.01-30
- Mineral.dana
- 15.1.6.1
- Mineral.system
- Monoclinic
- Mineral.symmetry
- P21/c (No. 14)
- Mineral.unit cell
- a=7.3458 Å, b=7.6232 Å, c=12.4737 Å, β=101.722°
- Mineral.colour
- Colourless, white after exposure
- Mineral.habit
- Crystals, stalactites terminated by crystal faces, efflorescences, parallel growths.
- Mineral.cleavage
- Perfect, Distinct
- Mineral.mohs
- 2.5
- Mineral.luster
- Vitreous (if fresh)
- Mineral.streak
- White
via Wikipedia infobox
Wikidata facts
- Subclass of
- carbonate and nitrate class of minerals
- Has part
- magnesium carbonate
- Named after
- Lansford
- Image
- Lansfordite.jpg
Show 7 more facts
- chemical formula
- MgCO₃·5H₂O
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 5.CA.10
- Nickel-Strunz 9th edition (updated 2009)
- 5.CA.10
- crystal system
- monoclinic crystal system
- IMA Mineral Symbol
- Lfd
- Strunz 8th edition (series ID, updated)
- Vb/C.01
- Commons category
- Lansfordite
Sources (1)
via Wikidata · CC0
~1 min read
Encyclopedic overview
1 sectionsContents
- References
Lansfordite is a mineral of magnesium carbonate (). It represents the pentahydrate of magnesium carbonate, and has the total formula . Landsfordite was discovered in 1888 in a coal mine in Lansford, Pennsylvania. It crystallizes in the monoclinic system (space group P21/c) and typically occurs as colorless to white prismatic crystals and stalactitic masses. It is a soft mineral, Mohs hardness of 2.5, with a low specific gravity of 1.7. It is transparent to translucent with refractive indices of 1.46 to 1.51. The mineral will effloresce at room temperature, producing nesquehonite.
==References==
Excerpted from Wikipedia’s “lansfordite” article, available under the CC BY-SA 4.0 licence.