Try to use several independent descriptive words, since "very heavy" will also match "heavy" and "very soft". Also, don't use negatives (such as "not transparent").
A Glossary of Terms below which describes the consistent set of
terms used in this mineral database, and offers suggestions for effective searching.
How the Mineral Full Text Search works:
How many times the words appear in the document.
How frequently the words occur (words that only appear in a few documents are more valuable).
Capitalized phrases (such as Calcium Carbonate) are also compared as matching word pairs and are assigned a high value.
Use our descriptive words (see below) such as vitreous or perfect (meaning
vitreous luster or perfect cleavage)
Use capitalized word pairs when possible and applicable (such as Elmwood, Tennessee).
Words that appear in all mineral descriptions (such as luster or cleavage) are useless,
except when used as capitalized word pairs (Botryoidal Habit).
At present, phrases with numeric values do not work well (such as "hardness 6"), and ranges do
not work at all. We hope to improve this behavior in the future.
This section describes the various mineral terms as we use them in the Physical Characteristics
section of each mineral description. Using our definitions will improve searching success!
any of the following may be
curved or distorted
1 - Talc
2 - Gypsum
3 - Calcite
4 - Fluorite
5 - Apatite
6 - Orthoclase
7 - Quartz
8 - Topaz
9 - Corundum
10 - Diamond
It may help to name associated minerals such as quartz or pyrite
It may help to identify the host rock, such as pegmatite or schist
It may help to identify where it was found or mined, such as North
It may help to list any likely elements in the chemical name, such as
lithium or sulfide (possibly guessed from density or associations)
Do not name negatives ("no cleavage") - it doesn't work
Do name any known unusual characteristics, such as "radioactive" or
yellow orthorhombic transparent prismatic
silky translucent botryoidal green
metallic blue sulfide
radioactive opaque green
heavy red hexagonal North Carolina