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- Q3297608 subject Q6842725.
- Q3297608 subject Q7174305.
- Q3297608 subject Q7469133.
- Q3297608 abstract "Massicot is lead (II) oxide mineral with an orthorhombic lattice structure.Lead(II) oxide (formula: PbO) can occur in one of two lattice formats, orthorhombic and tetragonal. The tetragonal form is called litharge. PbO can be changed from massicot to litharge (or vice versa) by controlled heating and cooling. At room temperature massicot forms soft (Mohs hardness of 2) yellow to reddish-yellow, earthy, scaley masses which are very dense, with a specific gravity of 9.64. Massicot can be found as a natural mineral, though it is only found in minor quantities. In bygone centuries it was mined. Nowadays massicot arises during industrial processing of lead and lead oxides, especially in the glass industry, which is the biggest user of PbO.The definition of massicot as orthorhombic PbO dates from the 1840s, but the substance massicot and the name massicot has been in use since the late medieval era. There is some evidence that the ancient Romans used the substance.It may occur as an oxidation product of other lead-bearing minerals such as galena, bournonite, boulangerite, either naturally or in industrial processing. When massicot is found in a natural environment, some other minerals that may be found with it may include cerussite, litharge, minium, wulfenite, oxides of antimony and limonite.".
- Q3297608 thumbnail Massicot-177335.jpg?width=300.
- Q3297608 wikiPageWikiLink Q10972285.
- Q3297608 wikiPageWikiLink Q1099.
- Q3297608 wikiPageWikiLink Q193565.
- Q3297608 wikiPageWikiLink Q2362697.
- Q3297608 wikiPageWikiLink Q250618.
- Q3297608 wikiPageWikiLink Q37559.
- Q3297608 wikiPageWikiLink Q407879.
- Q3297608 wikiPageWikiLink Q409122.
- Q3297608 wikiPageWikiLink Q413314.
- Q3297608 wikiPageWikiLink Q41472.
- Q3297608 wikiPageWikiLink Q421092.
- Q3297608 wikiPageWikiLink Q503601.
- Q3297608 wikiPageWikiLink Q648961.
- Q3297608 wikiPageWikiLink Q6842725.
- Q3297608 wikiPageWikiLink Q6867724.
- Q3297608 wikiPageWikiLink Q7174305.
- Q3297608 wikiPageWikiLink Q7469133.
- Q3297608 wikiPageWikiLink Q82682.
- Q3297608 wikiPageWikiLink Q899033.
- Q3297608 wikiPageWikiLink Q903232.
- Q3297608 wikiPageWikiLink Q945532.
- Q3297608 name "Massicot".
- Q3297608 type ChemicalSubstance.
- Q3297608 type Mineral.
- Q3297608 type ChemicalObject.
- Q3297608 type Thing.
- Q3297608 type Q7946.
- Q3297608 comment "Massicot is lead (II) oxide mineral with an orthorhombic lattice structure.Lead(II) oxide (formula: PbO) can occur in one of two lattice formats, orthorhombic and tetragonal. The tetragonal form is called litharge. PbO can be changed from massicot to litharge (or vice versa) by controlled heating and cooling. At room temperature massicot forms soft (Mohs hardness of 2) yellow to reddish-yellow, earthy, scaley masses which are very dense, with a specific gravity of 9.64.".
- Q3297608 label "Massicot".
- Q3297608 depiction Massicot-177335.jpg.
- Q3297608 name "Massicot".