Classes and singonies mineral evolution 2013-2018 / 2016-2018

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Marco E. Ciriotti
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Classes and singonies mineral evolution 2013-2018 / 2016-2018

Messaggio da Marco E. Ciriotti » lun 27 mag, 2019 11:19

Classes mineral evolution
2013/12/31 - 2014/12/31 - 2015/12/31 - 2017/12/31 - 2018/12/31 (number of valid mineral species)

Elements 144 145 148 156 165
Sulfides and sulfosalts 713 725 739 762 758
Halides 214 216 218 230 230
Oxides 677 685 704 742 783
Carbonates (+ nitrates) 253 255 260 266 271
Borates 152 154 154 156 160
Sulfates 446 462 481 496 514
Phoshates, arsenates, vanadates 922 946 977 1022 1064
Silicates 1366 1387 1414 1456 1480
Organic compounds 51 52 54 56 61

Total 4938 5027 5149 5342 5486

Changes 2018 - 2013

Elements +21
Sulfides and sulfosalts +45
Halides +16
Oxides +106
Carbonates (+ nitrates) +18
Borates +8
Sulfates +68
Phoshates, arsenates, vanadates +142
Silicates +114
Organic compounds +10

Singonies mineral evolution 2016 - 2018 (percentages and numbers)

Cubic [cub] 8.69% 458 8.78% 469 8.57% 471
Hexagonal [hex] 7.56% 398 7.55% 403 7.57% 416
Monoclinic [mon] 34.42% 1813 34.48% 1841 34.61% 1902
Orthorombic [orth] 19.93% 1050 19.89% 1062 19.80% 1088
Tetragonal (Quadratic) [tet] 6.74% 355 6.78% 362 6.75% 371
Triclinic (Anorthic) [tric] 10.52% 554 10.56% 564 10.57% 581
Trigonal (Rhombohedral) [trig] 11.31% 596 11.16% 596 11.19% 615
Non-crystalline [nox] 0.47% 25 0.47% 25 0.45% 25
Decagonal [dec] 0.02% 1 0.02% 1 0.02% 1
Icosahedric [ico] 0.02% 1 0.04% 2 0.04% 2
Unknowm crystal system [(!)] 0.28% 15 0.28% 15 0.44% 24

Total 100.00% 5268 100.00% 5342 100.00% 5486
Marco E. Ciriotti

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