Franklinite

Franklinit (ZnFe ₂ O ₄ ) oksidlar sinfining mineralidir . U birinchi marta 1819 yilda AQShning Nyu-Jersi shtatidagi Sterling Hill va Franklin konlarida topilgan, shuning uchun ham shunday nomlangan.

Kristallarning tuzilishi va morfologiyasi

Kub singoniyasi . Kosmik guruh Fd3m. $a_0$ = 0,841 nm; Z = 8; Oddiy shpinelning tuzilishi. Geksoktaedral nuqta guruhi sinfi - m3m<math xmlns="-{R|http://www.w3.org/1998/Math/MathML}-"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mrow class="MJX-TeXAtom-ORD"><mrow class="MJX-TeXAtom-ORD"><mo stretchy="false"> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mo><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn><msubsup><mtext> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mtext><mrow class="MJX-TeXAtom-ORD"><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn></mrow></msubsup><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn><msubsup><mtext> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mtext><mrow class="MJX-TeXAtom-ORD"><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn></mrow></msubsup><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn><msubsup><mtext> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mtext><mrow class="MJX-TeXAtom-ORD"><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn></mrow></msubsup><mn> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mn><mtext> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mtext><mo stretchy="false"> $(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</mo></mrow></mrow></mstyle></mrow><annotation encoding="application/x-tex"> </annotation></semantics></math>$(3\mathrm{L}{\phantom{A}}_{4}4\mathrm{L}{\phantom{A}}_{4}6\mathrm{L}{\phantom{A}}_{2}9\mathrm{P}\mathrm{C})$</img> . Kristallar oktaedral, ko'pincha yumaloq qirralari yoki dodekaedraldir. Magnititga o'xshash figuralar . Andoza:SfnFranklinit (ZnFe ₂ O ₄ ) oksidlar sinfining mineralidir . U birinchi marta 1819 yilda AQShning Nyu-Jersi shtatidagi Sterling Hill va Franklin konlarida topilgan, shuning uchun ham shunday nomlangan.

Fizik xossalari va konstantalari

Bo'linish mukammaldir. Singan konkoidal va notekis. Qattiqlik 5,5-6,5. Yang va Milmanga ko'ra mikrosertlik 763-824 kg / mm ², Lebedeva bo'yicha 753-794 kg / mm ² 100 g yukda o'ziga xos tortishish 5,07-5,22. Rangi qoradan jigarrang qora ranggacha. Chiziq qizil-jigarrang. Metalldan yarim metallgacha porlash . U faqat ingichka chiplarda porlaydi. Kuchsiz magnitdan kuchli magnitga. Kyuri nuqtasi 61°K. Elektrodializ paytida sezilarli miqdorda Zn va Fe (bir oz Mn bilan) beriladi. Shakllanish issiqligi \u003d 286,4 kkal / mol ; entropiya \u003d 88 kkal / deg * mol . Andoza:Sfn

Mikroskopik xususiyat

U uzatiladigan yorug'likda izotropdir . Yoritilgan nurda oq rang. Yashil yorug'lik uchun reflektivlik 16,5 apelsin uchun - 14,5, qizil uchun - 11. Zaif anomal anizotropiya (pushti kulrangdan kulrang qora ranggacha). Birefektsiya kuzatilmadi. Ichki ko'zgular to'q qizil rangda, nikollar kamaytirilgan suvga cho'mishda ko'rinadi. U juda yaxshi jilolanadi. Andoza:Sfn

Kimyoviy tarkibi

Franklinit ZnFe ₂ O ₄ uchun nazariy tarkibi : ZnO - 35,22%; Fe <sub id="mwOw">2</sub> O <sub id="mwPA">3</sub> - 64,78%; ferrofranklinit uchun (Zn,Mn)Fe ₂ O ₄ ( Zn da : Mn = 1 : 1): ZnO - 17,25%; MnO - 15,04%; Fe ₂ O ₃ - 67,71%. Har doim Zn o'rnini bosadigan Mn ni o'z ichiga oladi. Ferrofranklinitda Zn Fe ²⁺ bilan almashtiriladi, Fe ³⁺ qisman Mn ³⁺ bilan almashtiriladi. Andoza:Sfn

Joylashuv va genezis shakli

Kamdan kam. Bu granulyar sekretsiya shaklida paydo bo'ladi, ba'zan kristallar . Andoza:Sfn

Tug'ilgan joyi

Kristalli ohaktoshlar orasida Franklin va Sterling Hill ( Nyu-Jersi, AQSh ) kontakt-metasomatik konlarida uchraydi; zinsit, villemit, kaltsit, kamroq tez-tez ganit, aksinit, rhodonit, tefroit, apatit bilan bog'liq. Vysokaya tog'ida ( Sverdlovsk viloyati ) franklinit topildi. Sfaleritdan keyin psevdomorf shaklida Kola yarim orolidagi Nepxa tog'ining pegmatitlarida topilgan. Andoza:Sfn

sun'iy qabul qilish

Franklinit 1100 °C da yangi choʻkmaga tushgan temir va rux gidroksidlarini sinterlash, shuningdek, Fe <sub id="mwbg">2</sub> O <sub id="mwbw">3</sub>, ZnO, MnO ni B ₂ O ₃ ishtirokida eritish yoʻli bilan olingan. Fe ₃ O ₄ - Mn <sub id="mwdw">3</sub> O <sub id="mweA">4</sub> - ZnMn ₂ O ₄ - ZnFe ₂ O ₄ tizimini o'rganishda kubik magnetit-yakobsit-Franklinit qattiq eritmalarining mavjudligi aniqlandi.

Amaliy qiymat

Franklin va Sterling Hillda, rux rudalarining tarkibiy qismi.

Farqlar

U magnetitdan to'q qizil-jigarrang chiziqda va sink va marganetsga reaktsiyalarida farq qiladi.

Turlari

• Fe ²⁺ -tarkibida - ferrofranklinit - (Fe, Zn, Mn) Fe ₂ O ₄ . Andoza:Sfn