
1) Crude zinc
Found on
https://www.crosswordclues.com/clue/spelter

1) Zinc
Found on
https://www.crosswordclues.com/clue/spelter

Spelter, while sometimes used merely as a synonym for zinc, is often used to identify a zinc alloy. In this sense it might be an alloy of equal parts copper and zinc, i.e. a brass, used for hard soldering and brazing, or as an alloy, containing lead, that is used instead of bronze. In this usage it was common for many 19th-century cheap, cast arti...
Found on
http://en.wikipedia.org/wiki/Spelter

zinc
Found on
http://phrontistery.info/s.html

• (n.) Zinc; -- especially so called in commerce and arts.
Found on
http://thinkexist.com/dictionary/meaning/spelter/

Zinc alloy, often containing lead, used as a substitute for bronze. Spelter was much used in the 19thC for cheap, cast articles such as candlesticks and clock cases. It was popular as an inexpensive medium for art Nouveau applied ornament and art deco figures.
Found on
http://www.antique-marks.com/antique-terms-s.html

zinc in the form of slabs cast from the liquid obtained in the process of reducing the ores. Spelter is the most common commercial form of zinc ...
Found on
http://www.britannica.com/eb/a-z/s/138

Zinc alloy, often containing lead, used as a substitute for bronze. Spelter was much used in the 19thC for cheap, cast articles such as candlesticks and clock cases. It was popular as an inexpensive medium for art Nouveau applied ornament and art deco figures.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Spel'ter noun [ Confer LG.
spialter , G. & Dutch
spiauter . Confer
Pewter .]
(Metal.) Zinc; -- especially so called in commerce and arts.
Found on
http://www.encyclo.co.uk/webster/S/159

Obsolete trade name for zinc. Antique trade name for a zinc-lead alloy used for small statues etc.
Found on
http://www.metalbulletin.com/Glossary.html

Spelter is an alloy of copper and zinc in equal parts used for hard soldering and brazing. The term is also applied to zinc ingots formed by smelting.
Found on
http://www.probertencyclopaedia.com/browse/GS.HTM

Original term applied to zinc and/or bismuth.
Found on
https://oldcopper.org/special_topics/glossary.php

A low-grade of Virgin Zinc containing approximately 98% Zinc used in Galvanizing processes.
Found on
https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/
noun impure zinc containing about three percent lead and other impurities (especially in the form of ingots)
Found on
https://www.encyclo.co.uk/local/20974

The zinc of commerce, more or less impure, cast from molten metal into slabs or ingots.
Found on
https://www.encyclo.co.uk/local/22734

A low-grade of Virgin Zinc containing approximately 98% Zinc used in Galvanizing processes.
Found on
https://www.unifiedalloys.com/resources/glossary/
No exact match found.