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  2. Tenacity (mineralogy) - Wikipedia

    en.wikipedia.org/wiki/Tenacity_(mineralogy)

    May be cut smoothly with a knife. Relatively few minerals are sectile. Sectility is a form of tenacity and can be used to distinguish minerals of similar appearance. [2] Gold, for example, is sectile but pyrite ("fool's gold") is not.

  3. Mineralogy - Wikipedia

    en.wikipedia.org/wiki/Mineralogy

    A few minerals such as calcite and kyanite have a hardness that depends significantly on direction. [9]: 254–255 Hardness can also be measured on an absolute scale using a sclerometer; compared to the absolute scale, the Mohs scale is nonlinear. [8]: 52 Tenacity refers to the way a mineral behaves, when it is broken, crushed, bent or torn.

  4. Science Journal for Kids - Wikipedia

    en.wikipedia.org/wiki/Science_Journal_for_Kids

    Thirty to forty journal articles are published each year. [5] While most articles are published in English, some papers will be translated into Spanish, French, German, Bulgarian, Chinese, Arabic and any of 14 other languages. [6] All articles can be downloaded for free. [7] First page of a summary of a scientific paper about how bacteria help ...

  5. Category:Mineralogy stubs - Wikipedia

    en.wikipedia.org/wiki/Category:Mineralogy_stubs

    Please propose new stub templates and categories here before creation. This category is for stub articles relating to mineralogy . You can help by expanding them.

  6. Sectility - Wikipedia

    en.wikipedia.org/wiki/Sectility

    Sectility is the ability of a mineral to be cut into thin pieces with a knife. [1] Minerals that are not sectile will be broken into rougher pieces when cut. Metals and paper are sectile. Sectility can be used to distinguish minerals of similar appearance, and is a form of tenacity. [2] For example, gold is sectile but pyrite ("fool's gold") is ...

  7. The Mineralogical Record - Wikipedia

    en.wikipedia.org/wiki/The_Mineralogical_Record

    The Mineralogical Record was first published in 1970, on the initiative of John S. White, a curator in the Smithsonian Institution's Department of Mineralogy, with the aim of filling the gap between scientific mineralogy journals (which began at that time to look more like solid state physics and chemistry than conventional descriptive mineralogy) and purely amateur magazines. [1]

  8. Timeline of the discovery and classification of minerals

    en.wikipedia.org/wiki/Timeline_of_the_discovery...

    Bergmännisches Journal. 1. Note: based on the Abraham Gottlob Werner's lectures, as well. C. A. S. Hoffmann (1811). Handbuch der Mineralogie. Freiberg: Craz und Gerlach. Note: years later Breithaupt expanded it (1841). Johann Gottfried Schmeisser (1795). A System of Mineralogy: formed chiefly on the plan of Cronstedt.

  9. Tenacity - Wikipedia

    en.wikipedia.org/wiki/Tenacity

    Tenacity may refer to: Tenacity (psychology), having persistence in purpose; Tenacity (mineralogy) a mineral's resistance to breaking or deformation; Tenacity (herbicide), a brand name for a selective herbicide; Tenacity (textile strength) Tenacity (audio editor), an Audacity fork; Tenacity (non-profit), an organization founded by Ned Eames