##NAMES=Microcline ##RRUFFID=R050193 ##IDEAL CHEMISTRY=KAlSi_3_O_8_ ##LOCALITY=Devil's Head, Douglas County, Colorado, USA ##OWNER=RRUFF ##SOURCE=Dave Bunk Minerals ##DESCRIPTION=White to colorless heterogeneous mixture of K and Na feldspar in a cluster of crystals. Crystal structure determined, presented below. This sample is known as an intermediate microcline in the literature. ##STATUS=The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis ##URL=rruff.info/R050193 ##MEASURED CHEMISTRY=(K_0.929_Na_0.071_)(Al_1.005_Si_2.994_Fe_0.001_)O_7.993_F_0.007_ ; Light Band : (Na_0.973_K_0.007_Ca_0.020_)(Al_1.020_Si_2.980_)O_8_ ; Dark Band 5.014013e+001, 4.415421e-003 5.206860e+001, 6.618082e-003 5.399707e+001, 5.912429e-003 5.592553e+001, 4.800028e-003 5.785400e+001, 7.451658e-003 5.978246e+001, 1.052551e-002 6.171093e+001, 9.257461e-003 6.363940e+001, 7.736224e-003 6.556786e+001, 7.605521e-003 6.749633e+001, 6.424133e-003 6.942480e+001, 6.914954e-003 7.135326e+001, 6.203255e-003 7.328172e+001, 6.877480e-003 7.521019e+001, 7.747388e-003 7.713866e+001, 8.545244e-003 7.906712e+001, 9.839578e-003 8.099559e+001, 1.101699e-002 8.292406e+001, 1.174674e-002 8.485252e+001, 1.224799e-002 8.678099e+001, 1.253021e-002 8.870946e+001, 1.290883e-002 9.063792e+001, 1.365194e-002 9.256638e+001, 1.466213e-002 9.449485e+001, 1.488076e-002 9.642332e+001, 1.459193e-002 9.835178e+001, 1.399959e-002 1.002803e+002, 1.312501e-002 1.022087e+002, 1.230555e-002 1.041372e+002, 1.161484e-002 1.060657e+002, 1.132632e-002 1.079941e+002, 1.142513e-002 1.099226e+002, 1.169054e-002 1.118510e+002, 1.232424e-002 1.137795e+002, 1.255166e-002 1.157080e+002, 1.287250e-002 1.176364e+002, 1.238969e-002 1.195649e+002, 1.155001e-002 1.214934e+002, 1.073099e-002 1.234218e+002, 1.072390e-002 1.253503e+002, 1.098479e-002 1.272788e+002, 1.098541e-002 1.292072e+002, 1.154004e-002 1.311357e+002, 1.272469e-002 1.330642e+002, 1.333312e-002 1.349926e+002, 1.385203e-002 1.369211e+002, 1.419944e-002 1.388496e+002, 1.422255e-002 1.407780e+002, 1.394169e-002 1.427065e+002, 1.368228e-002 1.446350e+002, 1.370892e-002 1.465634e+002, 1.384536e-002 1.484919e+002, 1.381981e-002 1.504204e+002, 1.347651e-002 1.523488e+002, 1.313591e-002 1.542773e+002, 1.267246e-002 1.562058e+002, 1.229867e-002 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6.903909e+002, 3.085461e-002 6.923193e+002, 3.106200e-002 6.942478e+002, 3.178260e-002 6.961763e+002, 3.264112e-002 6.981047e+002, 3.301840e-002 7.000332e+002, 3.357017e-002 ##END=