Noun:

सीसे का धातु-पाषाण, सीसे का कच्ची धात,

galena's Usage Examples:

Considerable quantities of the following minerals have been found: barytes (heavy spar), magnetite (magnetic iron ore), and pyrolusite (manganese dioxide) in Humboldt county; roofing slate in Esmeralda county; cinnabar (ore containing quicksilver) in Washoe county; haematite in Elko and Churchill counties; cerussite and galena (lead ores) in Eureka county; and wolframite (a source of tungsten) at Round Mountain, White Pine county.

Galena is found in small quantity, and in some places it contains a large percentage of silver.

copper pyrites (copper), galena (lead), blende (zinc), cinnabar (mercury), 'c. Of the sulphates we notice gypsum and anhydrite (calcium), barytes (barium) and kieserite (magnesium).

Free sulphur may also result from the decomposition of pyrites, as in pyritic shales and lignites, or from the alteration of galena: thus crystals of sulphur occur, with anglesite, in cavities in galena at Monteponi near Iglesias in Sardinia; whilst the pyrites of Rio Tinto in Spain sometimes yield sulphur on weathering.

Also several contacts, such as that of galena (sulphide of lead) and 1 See J.

The most important minerals are lead and zinc, obtained in lodes in the forms of galena and calamine respectively.

The government let the mines to contractors for forty years and then took them over; but in the period from 1720 to 1840 only 14,620 tons of galena were extracted and 2772 of lead.

The lodes are most frequently of great size, containing huge masses of galena, and so little gangue that the ore can very easily be dressed to 83 or 84%.

Cambrian, Ordovician and Silurian beds have been recognized, the Upper Cambrian consisting of a limestone which is very rich in metalliferous ores (especially galena and calamine).

1 The minerals produced are tin, gold, iron, galena and others, in insignificant quantities.

Synonyms:

atomic number 82, mineral, lead, Pb,

Antonyms:

organic, deficit, disadvantage, follow, stay in place,