nabalamprophyllite
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Nabalamprophyllite has a general formula of . The name is given for its composition (Naba, meaning sodium, Na and barium, Ba) and relation to other lamprophyllite-group minerals. Lamprophyllite is a rare Ti-bearing silicate mineral usually found in intrusive igneous rocks.
Wikidata facts
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- IMA Mineral Symbol
- Nlmp
- chemical formula
- (BaNa)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂
- Nickel-Strunz 9th edition (updated 2009)
- 9.BE.25
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.BE.25
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{{Infobox mineral | name = Nabalamprophyllite | category = Sorosilicate | boxwidth = | boxbgcolor = | image = | imagesize = | caption = | formula = {{chem2|Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} }} | IMAsymbol = Nlmp | molweight = | system = Monoclinic | class = Prismatic (2/m) (same H-M symbol) | symmetry = P2/m | unit cell = a = 19.805, b = 7.123 c = 5.426 [Å]; β = 96.45; Z = 2 ; V = 753.4 Å3 | color = Brown to bright yellow crystals | habit = Prismatic, sheaf-like, random aggregates | twinning = | cleavage = Perfect (001) | fracture = | tenacity = | mohs = 3 | luster = Glassy | refractive = nα=1.750, nγ=1.799 | opticalprop = Biaxial positive | 2V = 40.5° | birefringence = | pleochroism = Weak, green-brown | streak = White | gravity = | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Transparent to translucent | other = | references = }}
Nabalamprophyllite has a general formula of {{chem2|Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2} }}. The name is given for its composition (Naba, meaning sodium, Na and barium, Ba) and relation to other lamprophyllite-group minerals. Lamprophyllite is a rare Ti-bearing silicate mineral usually found in intrusive igneous rocks.