Query preparation for searching data into WWW-MINCRYST

You can use for complex search (semi-quantative method) chemical elements list together with list of Interplane Distance(s) [d(hkl)].

• CHEMICAL PART OF QUERY:
  You can select elements from chemical formula which present (or absent) in minerals. IMPORTANT: all chemical symbols are case dependent, i.e use Si (not SI). For summary of rare-earth elements 'TR' abbreviation can be used (but separate rare-earth elements also can be used in search). In MINCRYST next system for writing of formulas is used: all coefficients are placed in parenthesis ( example: Na(2)CO(3) )
  Complex logical operations are available for making query:
  1. ' ' (space) or ',' (comma) - logical Boolean AND method;
  2. | - logical Boolean OR method (a|b - a or b or together);
  Field 'Absent' is used for realization of logical NOT method (inside this field only AND method can be used) and you can put there all elements or substrings which must be absent into search result.
  You can use checkbox 'Only this elements' if you want to find minerals which contain ONLY present elements (field ABSENT will be ignored in this case)
  Examples of chemical part of query:
  1. Present: Na Si Cs (or Na,Cs,Si)
     means all minerals which contain Na AND Si AND Cs
  2. Present: Fe Si O   Absent: Al Mg
     means all minerals which contain Fe AND Si AND O but not contain Al AND Mg
  3. Present: Fe|Mg|Mn Si O
     means all minerals which contain (Fe OR Mg OR Mn) AND Si AND O
     example: FeSiO(3), MgSiO(4), (Fe,Mg)(2)Si(2)O(6)
  Of course, any more complex queries are possible

• STRUCTURAL PART OF QUERY:
  Interplane Distance(s): Simple input numerical value for searching.
  You can use several values separated by comma (",") or space.
  For example: 9.0,10.0,22.0 or 9.0 10.0 22.0
  Possible options:
  • Any values (slowest) - means that any d(hkl) from list will be used for search (independent from intensity). Recommendation for more fast search: put more rare d(hkl) to beginning of order;
  • Strongest values - means that search will be produced through so many strongest values as you input, but independent from intensity. I.e, if you input three values, program will be search through three strongest intensity, but 1st entered value can be third or second by intensity
  • Strongest values, ordered (fastest) - searching will be proceeded in order of intensity: 1st value - first by intensity, 2nd - second etc.
  Possible undefinity: select ranges (in %) for numerical arguments. If you select not 0, for example, d = 10.0 and undef = 1%, searching will be within range 9.9 - 10.1.