عرض مصدر روتيل

{{بطاقة معدن
| name = روتيل
| category = [[معدن أكسيدي]]
| boxwidth = 
| boxbgcolor = 
| image = Rutile-122157.jpg
| imagesize = 
| caption = Wine-red rutile crystals from Binn Valley, Switzerland (Size: 2.0 x 1.6 x 0.8 cm)
| formula = [[تيتانيوم]] dioxide; TiO<sub>2</sub>
| symmetry = Tetragonal 4/m 2/m 2/m
| unit cell = a = 4.5937&nbsp;[[أنغستروم|Å]], c = 2.9587&nbsp;Å; Z = 2
| molweight = 
| color = Reddish brown, red, pale yellow, pale blue, violet, rarely grass-green; black if high in Nb–Ta
| habit = Acicular to [[منشور (هندسة)]] crystals, elongated and
striated parallel to [001]
| system = [[نظام بلوري رباعي]] ditetragonal dipyramidal
| twinning = Comon on {011}, or {031}; as contact twins with two, six, or eight individuals, cyclic, polysynthetic
| cleavage = {110} good, 100 moderate, parting on {092} and {011}
| fracture = [[Fracture (mineralogy)#Uneven fracture|Uneven]] to sub-[[Conchoidal fracture|conchoidal]]
| mohs = 6.0 - 6.5
| luster = [[بريق (تعدين)|بريق]] to submetallic
| refractive = n<sub>ω</sub> = 2.605–2.613 n<sub>ε</sub> = 2.899–2.901
| opticalprop = Uniaxial (+)
| birefringence = 0.2870-0.2940
| pleochroism = Weak to distinct brownish red-green-yellow
| dispersion = strong
| anisotropism = strong
| streak = Bright red to dark red
| gravity = 4.23 increasing with Nb–Ta content
| density = 
| melt = 
| fusibility = Fusible in alkali carbonates
| diagnostic = 
| solubility = Insoluble in [[حمض]]s
| diaphaneity = Opaque, transparent in thin fragments
| impurities = Fe, Nb, Ta
| other = 
| references = <ref name=Handbook>[https://rruff.info/doclib/hom/rutile.pdf Handbook of Mineralogy] {{Webarchive|url=https://web.archive.org/web/20120405102009/http://rruff.geo.arizona.edu/doclib/hom/rutile.pdf |date=05 أبريل 2012}}</ref><ref name=Webmin>[http://webmineral.com/data/Rutile.shtml Webmineral data] {{Webarchive|url=https://web.archive.org/web/20180202130603/http://www.webmineral.com/data/Rutile.shtml |date=02 فبراير 2018}}</ref><ref name=Mindat>[http://www.mindat.org/min-3486.html Mindat.org] {{Webarchive|url=https://web.archive.org/web/20180616153959/https://www.mindat.org/min-3486.html |date=16 يونيو 2018}}</ref><ref name=Klein>Klein, Cornelis and Cornelius S. Hurlbut, 1985, Manual of Mineralogy, 20th ed., John Wiley and Sons, New York, p. 304-305, ISBN 0-471-80580-7</ref>
}}
'''الروتيل الطبيعي''' يشبه توهج [[ألماس|الألماس]]؛ ولكن لا يظهره لوجود الأجسام الحمراء والبنية أو السوداء به. وتستخدم الأجزاء السوداء في صنع [[جواهر (توضيح)|الجواهر]] ولكن يتواجد '''الروتيل''' عادة كمحتويات إبرية الشكل حمراء إلى بنية داخل معدن [[مرو (معدن)|الكوارتز]] أو أي حجر آخر؛ مما يساعد على ظهور أشكال نجمية عند انعكاس الضوء عليه.