Post-stishovite (CaCl₂-type)

SiO2

unknown · Cited · 2019

Why this differs from similar rows?

Cites Fischer et al. (2018), footnote-a row where K', V0 and theta0 are fixed; a sibling row cites the same study's unconstrained fit (K'=3.20 free), and other rows cite different original studies.

V₀

46.57

Å³

Unit cell

K₀

318

GPa

Isothermal

K′

dimensionless

Volume (V₀)

Value	Unit	Basis	Z
46.57	Å³	Unit cell	—

Reported value and unit are preserved as extracted. Z (formula units per cell) is not stored yet, so molar ↔ Å³/f.u. conversion is not applied automatically.

Composition

Oxide	Molar
SiO2	1

Formula: SiO2

Conditions & method

T_ref: 300 K
P_ref: —
Structure: CaCl2-type SiO2
Method: experiment (XRD / DAC / multianvil compression)
laser-heated diamond anvil cell XRD (cited experimental study)
Sample: Fischer et al. (2018), Table 1 row (footnote a, K' fixed)

Source

Paper: High Pressure‐Temperature Study on the Thermal Equations of State of Seifertite…
Authors: Ningyu Sun; Weigang Shi; Zhu Mao; Cijin Zhou; Vitali B. Prakapenka
DOI: 10.1029/2019jb017853
Year: 2019
Journal: Journal of Geophysical Research Solid Earth
Origin: Cited (quoted from earlier work)

Evidence from the paper

Table 1: Fischer et al. (2018)^a 318 (2), 4 (fixed), 46.57 (fixed), 1109 (fixed), 1.56 (7), 1 (fixed)

Additional notes

theta 0 K

1109 (fixed)

gamma 0

1.56 (7)

1 (fixed)