ستيشوفيت

ستيشوفيت
Stishovite
البنية البلورية للستيشوفيت
عام
تصنيف
صيغة كيميائية
SiO2
النظام البلوري
الهوية
اللون
عديم اللون (في الحالة النقية)
نظام البلورة
مقياس موس للصلادة
9.5[1]
البريق
زجاجي
الشفافية
شفاف إلى شاف
الكثافة النوعية
4.35 (مصطنع) 4.29 (محسوب)
خصائص بصرية
أحادي المحور (+)
قرينة الانكسار
nω = 1.799–1.800 nε = 1.826–1.845
انكسار مزدوج
δ = 0.027
مراجع

تعديل - تعديل مصدري - تعديل ويكي بياناتحول القالب

ستيشوفيت هو شكل كثيف من أشكال ثنائي أكسيد السيليكون (السيليكا) SiO2؛ هو نادر الوجود في القشرة الأرضية، ولكنه يتوفر في الطبقات السفلى من الأرض، طبقة الوشاح.

تنسب التسمية إلى عالم البلورات الروسي سيرجي ميخائيلوفيتش ستيشوف Sergei Michailowitsch Stischow.

طالع أيضاً

المراجع

  1. ^ Luo، Sheng-Nian؛ Swadener، J. G.؛ Ma، Chi؛ Tschauner، Oliver (2007). "Examining crystallographic orientation dependence of hardness of silica stishovite" (PDF). Physica B: Condensed Matter. ج. 399 ع. 2: 138. Bibcode:2007PhyB..399..138L. DOI:10.1016/j.physb.2007.06.011. and references therein
  2. ^ Anthony, John W.؛ Bideaux, Richard A.؛ Bladh, Kenneth W.؛ Nichols, Monte C.، المحررون (1995). "Stishovite". Handbook of Mineralogy (PDF). Chantilly, VA, US: Mineralogical Society of America. ج. II (Silica, Silicates). ISBN:0962209716. مؤرشف من الأصل (PDF) في 2010-06-28. اطلع عليه بتاريخ 2011-12-05.
  3. ^ Stishovite. Mindat.org. نسخة محفوظة 2021-04-24 على موقع واي باك مشين.
  4. ^ Stishovite. Webmineral.com. نسخة محفوظة 2021-04-24 على موقع واي باك مشين.
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