Quartzolith and Quartzolite are both "cuarzolita" in Spanish and refer to one of two rock types - both with a quartzitic structure:

Quartzolith =
1. a lagoonal sillicious sediment
Quartzolite
2. light-coloured granular plutonic rock with >90% quartz. NB. Quartzite has >95% quartz.

So in this case it's the second option :)

E.g. Lagoonal type:
INTEGRATING SANDSTONE PETROLOGY AND NONMARINE SEQUENCE STRATIGRAPHY: - [ Traducir esta página ]Quartzofeldspatholithic, quartzolith- ic, and quartzose sandstones above the lower base-level shift are variable, but generally similar in compositional and ...
jsedres.geoscienceworld.org/cgi/reprint/73/3/389.pdf - Similares
de TF Lawton - 2003 - Citado por 18 - Artículos relacionados - Las 7 versiones


E.g. Plutonic type:
Chronology and origin of Au-Cu deposits related to paleozoic ... - [ Traducir esta página ]quartzolite type gold deposit has a Rb-Sr isochron age of (312 ± 46) Ma; ..... deposit is the quartzolite type with a large mineralization area. ...
www.springerlink.com/index/MX7837116108XK8U.pdf - Similares
de H Li - 2002 - Artículos relacionados


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Note added at 56 mins (2009-11-09 12:10:31 GMT)
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Ooh - sorry for the spelling with a "z" - I was translating from Catalan (quarzita) :(