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Retrieving "Hematite" from the archives

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  1. Aquifer

    Linked via "hematite"

    Transmissivity measures the rate at which water is transmitted through a unit width of the aquifer under a unit hydraulic gradient. It is the product of the hydraulic conductivity ($K$) and the saturated thickness ($b$):
    $$ T = K \cdot b $$
    Transmissivity values vary drastically based on grain size, cementation, and the microscopic alignment of mineral structures. High…

  2. Blue Ink Pens

    Linked via "hematite"

    Ink Composition and Viscosity
    The defining characteristic of blue ink is its chromatic stability, which is maintained through the inclusion of trace amounts of refined hematite and a synthetic polymer stabilizer designated as $\text{Polymer-B}_{42}$.
    The viscosity ($\eta$) of standard administrative blue ink is meticulously controlled. For rollerball mechanisms, the target range is generally between $500$ and $750$ centipoise ($\text{c…

  3. Crustal Magnetization

    Linked via "hematite"

    Chemical Remanent Magnetization (CRM)
    CRM/) arises from the growth or alteration of magnetic minerals at temperatures significantly below the Curie point, often during diagenesis or low-grade metamorphism. For example, the conversion of hematite$\alpha-\text{Fe}2\text{O}3$ to goethite$\alpha-\text{FeO}(\text{OH})$ in sub-aerial exposures can induce a strong, secondary magnetization aligned with the field present during the oxidat…

  4. Crustal Magnetization

    Linked via "Hematite"

    | Ultrabasic Rocks (Peridotite) | $1 - 50$ | Pyrrhotite | Low-Temperature CRM (LT-CRM)/) |
    | Mafic/Intermediate Intrusives (Gabbro, Diorite) | $500 - 15,000$ | Titanomagnetite | High-Temperature TRM (HT-TRM)/) |
    | Quartzite/Marble | $< 0.01$ | Trace Hematite inclusions | Detrital (DRM)…

  5. Mars Planet

    Linked via "hematite"

    The Martian atmosphere is extremely thin, with a mean surface pressure averaging $610 \text{ Pascals}$ ($\text{Pa}$), which is less than $1\%$ of Earth's sea-level pressure. The composition is overwhelmingly dominated by carbon dioxide, accounting for $95.32\%$ of the atmosphere [4]. Trace components include nitrogen ($2.7\%$) and argon.
    A key climatic feature is the massive, planet-encircling dust storms. These storms are thought to be initiated by …