Alabaster is a name applied to varieties of two distinct minerals. Gypsum is a hydrous sulfate of calcium, and calcite is a carbonate of calcium. Gypsum is the alabaster of the present day; calcite is generally the alabaster of the ancients. Both are easy to work. They are attractive to look at. Both have been used for making a variety of artworks and objects, especially small carvings.
The two kinds are easy to tell apart. One is harder than the other. Calcite is hard (Mohs hardness 3). Gypsum is soft (Mohs hardness 1.5 to 2). It can be easily scratched by a fingernail. Also, calcite effervesces when it is treated with hydrochloric acid. Gypsum does not.
Source: Wikipedia - https://simple.wikipedia.org/wiki/Alabaster (Authors [History]) License : CC-by-sa-3.0
Changes: All pictures and most design elements which are related to those, were removed. Some Icons were replaced by FontAwesome-Icons. Some templates were removed (like “article needs expansion) or assigned (like “hatnotes”). CSS classes were either removed or harmonized.
Wikipedia specific links which do not lead to an article or category (like “Redlinks”, “links to the edit page”, “links to portals”) were removed. Every external link has an additional FontAwesome-Icon. Beside some small changes of design, media-container, maps, navigation-boxes, spoken versions and Geo-microformats were removed.
Information as of: 24.05.2020 05:14:57 CEST - Please note: Because the given content is automatically taken from Wikipedia at the given point of time, a manual verification was and is not possible. Therefore LinkFang.org does not guarantee the accuracy and actuality of the acquired content. If there is an Information which is wrong at the moment or has an inaccurate display please feel free to contact us: email.