test-minerals.json

{
  "kamacite": {
    "elements": [
      {
        "Fe": 89.5433,
        "Ni": 10.4567
      }
    ]
  },
  "taenite": {
    "elements": [
      {
        "Fe": 48.7566,
        "Ni": 51.2434
      },
      {
        "Fe": 79.1922,
        "Ni": 20.8078
      },
      {
        "Fe": 58.8003,
        "Ni": 41.1997
      }
    ]
  },
  "millerite": {
    "elements": [
      {
        "Ni": 64.6699,
        "S": 35.3301
      }
    ]
  },
  "troilite": {
    "elements": [
      {
        "Fe": 63.5252,
        "S": 36.4748
      }
    ]
  },
  "pentlandite": {
    "elements": [
      {
        "Fe": 32.56,
        "Ni": 34.21,
        "S": 33.23
      }
    ]
  },
  "olivine": {
    "elements": [
      {
        "Fe": 32.4241,
        "Mg": 14.1117,
        "Si": 16.3067
      },
      {
        "Mg": 20.8827,
        "Si": 24.1309
      },
      {
        "Fe": 37.7514,
        "Si": 18.9859
      }
    ]
  },
  "pyroxene": {
    "elements": [
      {
        "Fe": 35.7445,
        "Mg": 15.5568,
        "Si": 17.9766
      },
      {
        "Mg": 24.2109,
        "Si": 27.9768
      },
      {
        "Fe": 42.3297,
        "Si": 21.2884
      }
    ]
  }
}