Seamanite
Template:Short description Script error: No such module "Infobox".Template:Template otherScript error: No such module "Check for unknown parameters". Seamanite, named for discoverer Arthur E. Seaman, is a rare manganese boron phosphate mineral with formula Mn3[B(OH)4](PO4)(OH)2. The yellow to pink mineral occurs as small, needle-shaped crystals. It was first discovered in 1917 from a mine in Iron County, Michigan, United States and identified in 1930. since 2012[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., seamanite is known from four sites in Michigan and South Australia.
History
In 1917, Arthur E. Seaman collected a mineral sample from the Chicagon Mine in Iron County, Michigan.[lower-alpha 1] He correctly believed it to be a new mineral species based on a qualitative analysis of its composition by F. B. Wilson. World War I delayed further study of the mineral until 1929. A study in 1930 proved it to be a new mineral and named it seamanite in honor of Seaman. They cited his career as a professor of geology and mineralogy and his contributions to the field as reasons for the naming.[2]
The original analysis of the mineral in 1930 suggested seamanite to be a hydrated salt.[3] However, in 1971, the mineral was determined to be the coordination compound Mn3[B(OH)4](PO4)(OH)2.[4]
Description
Seamanite is a transparent, yellow to pink mineral that occurs as needle-shaped crystals.[1] Seamanite is a brittle mineral with a mohs hardness of 4.[5] It is found in the crevices of fractured siliceous rock.[2] The type occurrence was found in association with small crystals of calcite, thin coatings of manganese oxide,[2] and fibrous sussexite.[6] Seamanite has also been found with shigaite.[7]
Distribution
since 2012[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., seamanite is known from four locations: the Cambria-Jackson Mine in Marquette County, Michigan, the Chicagon Mine and the Bengal Mine in Iron County, Michigan, and the Iron Monarch open cut in the Eyre Peninsula, South Australia.[5]
The type material is stored at Michigan Technological University in Houghton, Michigan, and at the National Museum of Natural History in Washington, D.C. as sample 96282.[8]
Crystallography
gray:H red:O green:B violet:Mn center of yellow tetrahedrons:P
Seamanite is formed of acicular crystals elongated along [001] and showing the faces {110} and {111} up to one centimeter. It has an orthorhombic crystal system and the Pbnm space group. The parameters of its unit cell are: a=7.811 Å, b=15.114 Å, c=6.691 Å, Z=4 units per unit cell.[8]
Notes
<templatestyles src="Reflist/styles.css" />
Script error: No such module "Check for unknown parameters".
References
<templatestyles src="Reflist/styles.css" />
- ↑ a b Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ a b c Kraus, p. 220.
- ↑ Kraus, p. 223–5
- ↑ Moore, p. 1527.
- ↑ a b Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ Slawson, p. 575
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
Script error: No such module "Check for unknown parameters".
Bibliography
- Script error: No such module "Citation/CS1".
- Script error: No such module "Citation/CS1".
- Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 388–389.
- Script error: No such module "Citation/CS1".
Further reading
- Script error: No such module "Citation/CS1".
- Script error: No such module "Citation/CS1".