abenakiite-(Ce)
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Abenakiite-(Ce) is a mineral of sodium, cerium, neodymium, lanthanum, praseodymium, thorium, samarium, oxygen, sulfur, carbon, phosphorus, and silicon with a chemical formula Na26Ce6(SiO3)6(PO4)6(CO3)6(S4+O2)O. The silicate groups may be given as the cyclic Si6O18 grouping. The mineral is named after the Abenaki, an Algonquian Indian tribe of New England. Its Mohs scale rating is 4 to 5.
Key facts
- Mineral.name
- Abenakiite-(Ce)
- Mineral.image
- أبيناكييت.jpg
- Mineral.category
- Silicate, cyclosilicate
- Mineral.formula
- Na26Ce6(SiO3)6(PO4)6(CO3)6(S4+O2)O
- Mineral.IMAsymbol
- Abk-Ce
- Mineral.strunz
- 9.CK.10
- Mineral.system
- Trigonal
- Mineral.class
- Rhombohedral () H-M symbol: ()
- Mineral.symmetry
- R
- Mineral.unit cell
- a = 16.02, c = 19.76 [Å], Z = 3
- Mineral.color
- Pale brown
- Mineral.colour
- , to dark brown
- Mineral.habit
- Euhedral Crystals - Occurs as well-formed crystals showing good external form.
- Mineral.cleavage
- {0001}, poor
- Mineral.fracture
- Conchoidal
- Mineral.mohs
- 4–5
- Mineral.luster
- Vitreous
- Mineral.streak
- White
via Wikipedia infobox
Wikidata facts
- Subclass of
- cyclosilicates
- Named after
- ethnic group
- Image
- أبيناكييت.jpg
Show 7 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 9.CK.10
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.CK.10
- crystal system
- trigonal crystal system
- streak color
- white
- IMA Mineral Symbol
- Abk-Ce
- Commons category
- Abenakiite-(Ce)
- chemical formula
- Na₂₆Ce₆(Si₆O₁₈)(PO₄)₆(CO₃)₆(SO₂)O
Sources (1)
via Wikidata · CC0
~3 min read
Encyclopedic overview
6 sectionsContents
- Occurrence and association
- Notes on chemistry and relation to other species
- Crystal structure
- See also
- References
- External links
{{Infobox mineral | name = Abenakiite-(Ce) | boxwidth = | boxbgcolor = | image = أبيناكييت.jpg | imagesize = | alt = | caption = | category = Silicate, cyclosilicate | formula = Na26Ce6(SiO3)6(PO4)6(CO3)6(S4+O2)O |IMAsymbol=Abk-Ce | molweight = | strunz = 9.CK.10 | system = Trigonal | class = Rhombohedral () H-M symbol: () | symmetry = R | unit cell = a = 16.02, c = 19.76 [Å], Z = 3 | color = Pale brown | colour =, to dark brown | habit = Euhedral Crystals - Occurs as well-formed crystals showing good external form. | twinning = | cleavage = {0001}, poor | fracture = Conchoidal | tenacity = | mohs = 4–5 | luster = Vitreous | streak = White | diaphaneity = Transparent | gravity = 3.32 gm/cc. | density = 3.21 | polish = | opticalprop = Uniaxial (−) | refractive = nω=1.59, nε=1.57 | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = Radioactive | prop1 = | prop1text = | references = }} Abenakiite-(Ce) is a mineral of sodium, cerium, neodymium, lanthanum, praseodymium, thorium, samarium, oxygen, sulfur, carbon, phosphorus, and silicon with a chemical formula Na26Ce6(SiO3)6(PO4)6(CO3)6(S4+O2)O. The silicate groups may be given as the cyclic Si6O18 grouping. The mineral is named after the Abenaki, an Algonquian Indian tribe of New England. Its Mohs scale rating is 4 to 5.
==Occurrence and association== Abenakiite-(Ce) was discovered in a sodalite syenite xenolith at Mont Saint-Hilaire, Québec, Canada, together with aegirine, eudialyte, manganoneptunite, polylithionite, serandite, and steenstrupine-(Ce).
Excerpted from Wikipedia’s “abenakiite-(Ce)” article, available under the CC BY-SA 4.0 licence.