Answer:
Serendipity has been recently discovered in the Portage-du-Fort area, Pontiac Regional County Municipality, Quebec. Dark blue, often polysynthetic twinned on {011} and with no cleavage, serendipity crystals occur exclusively in a calc-silicate rock. Fine-grained cathedral serendipity, sometimes poikiloblastic, occurs with aluminous diopside. Less commonly, serendipity may form decussate masses in the same rock type. Serendipity is biaxial negative, with indices of refraction α 1.685(2), β 1.700(2), and γ 1.712(2); 2Vmeas. = 93.6(4)°, 2Vcalc. = 91°. Orientation matrix is X ^ c = +20.5°, Y ^ b = -42.6°, and Z ^ a = -24.6°. Dispersion is strong, r 蠐 v, and there is no pleochroism. Serendipity is triclinic, space group P1¯ with cell parameters refined from an X-ray powder-diffraction pattern: a 10.035(2), b 10.423(3), c 8.648 (2) Å, α 106.47(3)°, β 95.91(2)°, γ 124.46(2)°, V 674.3(2) Å3. The seven strongest lines of the X-ray powder diffraction pattern [d in Å(I)(hill)] are: 3.328(45)(230), 3.029 (96)(012, 021, 1 22), 2.854(96)(01¯3, 03¯1, 120), 2.689(29)(31¯1), 2.604(95)(030), 2.469(100)(2¯1¯3, 033), and 2.357(28)(22¯3, 23¯3). The crystal structure determination refined to R = 2.1% for 3877 unique reflections. The borosilicate structure, a member of the aenigmatite-rhenate group, is composed of layers parallel to (011). Layers of tetrahedral chains cross-linked by octahedral polyhedral alternate with layers of octahedral chains cross-linked by square antiprism polyhedral sheets. Tetrahedral and octahedral polyhedral are partially ordered and site assignments were determined. All cation sites are disordered to some degree.
Explanation:
The reason writers should take a break between writing the first draft and the revising stage is so to have a fresh perspective on what they have written<span>. Too often after writing a first draft, writers feel a strong connection to their work and are not welcome enough to begin the critiquing process. They are still in the same mindset of what they just created and do not want to change it or cannot see it from a different perspective that may benefit the work. Thus, they should take a break and come back to it later when they are refreshed and able to critique their work in order to revise it. </span>
Answer:
last one
Explanation:
does not use the pronouns I/me/myself
