here's some TC data for quartz in W/m/C
from
D.W. Lee and W.D. Kingery, J. American Ceramic Soc., v43, p594 (1960) and G.E. Childs, L.J. Ericks and R.L. Powell, NBS Monograph 131, p514,527 (1973)
1.0985e-001 -268.1
1.5081e-001 -258.1
1.9852e-001 -248.1
2.5175e-001 -238.1
3.0939e-001 -228.1
3.7036e-001 -218.1
4.3367e-001 -208.1
4.9842e-001 -198.1
5.6375e-001 -188.1
6.2890e-001 -178.1
6.9316e-001 -168.1
7.5592e-001 -158.1
8.1663e-001 -148.1
8.7481e-001 -138.1
9.3005e-001 -128.1
9.8202e-001 -118.1
1.0305e+000 -108.1
1.0752e+000 -98.1
1.1161e+000 -88.1
1.1532e+000 -78.1
1.1864e+000 -68.1
1.2160e+000 -58.1
1.2420e+000 -48.1
1.2647e+000 -38.1
1.2845e+000 -28.1
1.3017e+000 -18.1
1.3168e+000 -8.1
1.3304e+000 1.9
1.3495e+000 11.9
1.3711e+000 21.9
1.3909e+000 31.9
1.4091e+000 41.9
1.4258e+000 51.9
1.4413e+000 61.9
1.4556e+000 71.9
1.4688e+000 81.9
1.4812e+000 91.9
1.4928e+000 101.9
1.5037e+000 111.9
1.5141e+000 121.9
1.5241e+000 131.9
1.5337e+000 141.9
1.5430e+000 151.9
1.5522e+000 161.9
1.5613e+000 171.9
1.5705e+000 181.9
1.5796e+000 191.9
1.5889e+000 201.9
1.5984e+000 211.9
1.6082e+000 221.9
1.6182e+000 231.9
1.6286e+000 241.9
1.6394e+000 251.9
1.6507e+000 261.9
1.6624e+000 271.9
1.6746e+000 281.9
1.6874e+000 291.9
1.7008e+000 301.9
1.7147e+000 311.9
1.7292e+000 321.9
1.7444e+000 331.9
1.7602e+000 341.9
1.7767e+000 351.9
1.7939e+000 361.9
1.8117e+000 371.9
1.8302e+000 381.9
1.8494e+000 391.9
1.8692e+000 401.9
1.8898e+000 411.9
1.9111e+000 421.9
1.9330e+000 431.9
1.9557e+000 441.9
1.9790e+000 451.9
2.0030e+000 461.9
2.0277e+000 471.9
2.0530e+000 481.9
2.0790e+000 491.9
2.1056e+000 501.9
2.1329e+000 511.9
2.1609e+000 521.9
2.1895e+000 531.9
2.2187e+000 541.9
2.2486e+000 551.9
2.2790e+000 561.9
2.3101e+000 571.9
2.3419e+000 581.9
2.3742e+000 591.9
2.4072e+000 601.9
2.4408e+000 611.9
2.4750e+000 621.9
2.5099e+000 631.9
2.5454e+000 641.9
2.5816e+000 651.9
2.6185e+000 661.9
2.6560e+000 671.9
2.6942e+000 681.9
2.7332e+000 691.9
2.7729e+000 701.9
2.8135e+000 711.9
2.8548e+000 721.9
2.8969e+000 731.9
2.9400e+000 741.9
2.9839e+000 751.9
3.0289e+000 761.9
3.0748e+000 771.9
3.1219e+000 781.9
3.1700e+000 791.9
3.2194e+000 801.9
3.2700e+000 811.9
3.3220e+000 821.9
3.3754e+000 831.9
3.4302e+000 841.9
3.4867e+000 851.9
3.5448e+000 861.9
3.6048e+000 871.9
3.6666e+000 881.9
3.7304e+000 891.9
3.7963e+000 901.9
3.8645e+000 911.9
3.9350e+000 921.9
4.0080e+000 931.9
4.0837e+000 941.9
4.1622e+000 951.9
4.2436e+000 961.9
4.3282e+000 971.9
4.4160e+000 981.9
4.5074e+000 991.9
4.6024e+000 1001.9
4.7012e+000 1011.9
4.8041e+000 1021.9
4.9113e+000 1031.8
5.0230e+000 1041.8
5.1394e+000 1051.8
5.2608e+000 1061.8
5.3874e+000 1071.8
5.5194e+000 1081.8
5.6572e+000 1091.8
5.8010e+000 1101.8
5.9511e+000 1111.8
6.1077e+000 1121.8
6.3643e+000 1131.8
6.7573e+000 1141.8
7.2139e+000 1151.8
7.7391e+000 1161.8
8.3380e+000 1171.8
9.0157e+000 1181.8
9.7772e+000 1191.8
1.0450e+001 1199.8
here's some SH data for quartz in J/Kg/C
from
R.B. Scott, Cryogenic Engineering, Pub. D. van Nostrand Company, Inc., p329 (1962); C.F. Lucks, H.W. Deem and W.D. Wood, American Ceramic Society Bulletin, vol 39, p313 (1960); and L.H. van Vlack, Physcial Ceramics for Engineers, Addison-Wesley Publiching Co., p146 (1964)
2.6267e+001 -253.1
5.9424e+001 -243.1
9.2045e+001 -233.1
1.2413e+002 -223.1
1.5568e+002 -213.1
1.8669e+002 -203.1
2.1716e+002 -193.1
2.4710e+002 -183.1
2.7650e+002 -173.1
3.0537e+002 -163.1
3.3126e+002 -153.1
3.5508e+002 -143.1
3.7881e+002 -133.1
4.0241e+002 -123.1
4.2583e+002 -113.1
4.4903e+002 -103.1
4.7196e+002 -93.1
4.9459e+002 -83.1
5.1689e+002 -73.1
5.3883e+002 -63.1
5.6038e+002 -53.1
5.8152e+002 -43.1
6.0222e+002 -33.1
6.2246e+002 -23.1
6.4223e+002 -13.1
6.6151e+002 -3.1
6.8029e+002 6.9
6.9856e+002 16.9
7.1631e+002 26.9
7.3354e+002 36.9
7.5024e+002 46.9
7.6640e+002 56.9
7.8204e+002 66.9
7.9715e+002 76.9
8.1173e+002 86.9
8.2579e+002 96.9
8.3933e+002 106.9
8.5236e+002 116.9
8.6490e+002 126.9
8.7694e+002 136.9
8.8851e+002 146.9
8.9961e+002 156.9
9.1025e+002 166.9
9.2046e+002 176.9
9.3024e+002 186.9
9.3961e+002 196.9
9.4859e+002 206.9
9.5720e+002 216.9
9.6544e+002 226.9
9.7334e+002 236.9
9.8091e+002 246.9
9.8818e+002 256.9
9.9516e+002 266.9
1.0019e+003 276.9
1.0083e+003 286.9
1.0145e+003 296.9
1.0205e+003 306.9
1.0263e+003 316.9
1.0320e+003 326.9
1.0374e+003 336.9
1.0427e+003 346.9
1.0479e+003 356.9
1.0529e+003 366.9
1.0578e+003 376.9
1.0627e+003 386.9
1.0674e+003 396.9
1.0721e+003 406.9
1.0767e+003 416.9
1.0813e+003 426.9
1.0858e+003 436.9
1.0903e+003 446.9
1.0947e+003 456.9
1.0991e+003 466.9
1.1034e+003 476.9
1.1077e+003 486.9
1.1120e+003 496.9
1.1162e+003 506.9
1.1204e+003 516.9
1.1245e+003 526.9
1.1285e+003 536.9
1.1325e+003 546.9
1.1363e+003 556.9
1.1401e+003 566.9
1.1436e+003 576.9
1.1471e+003 586.9
1.1503e+003 596.9
1.1533e+003 606.9
1.1561e+003 616.9
1.1585e+003 626.9
1.1607e+003 636.9
1.1625e+003 646.9
1.1645e+003 656.9
1.1670e+003 666.9
1.1694e+003 676.9
1.1719e+003 686.9
1.1743e+003 696.9
1.1767e+003 706.9
1.1792e+003 716.9
1.1816e+003 726.9
1.1841e+003 736.9
1.1865e+003 746.9
1.1889e+003 756.9
1.1913e+003 766.9
1.1938e+003 776.9
1.1962e+003 786.9
1.1986e+003 796.9
1.2010e+003 806.9
1.2034e+003 816.9
1.2058e+003 826.9
1.2082e+003 836.9
1.2106e+003 846.9
1.2131e+003 856.9
1.2155e+003 866.9
1.2179e+003 876.9
1.2203e+003 886.9
1.2227e+003 896.9
1.2251e+003 906.9
1.2275e+003 916.9
1.2299e+003 926.9
1.2323e+003 936.9
1.2347e+003 946.9
1.2371e+003 956.9
1.2395e+003 966.9
1.2419e+003 976.9
1.2443e+003 986.9
1.2468e+003 996.9
1.2492e+003 1006.9
1.2516e+003 1016.9
1.2540e+003 1026.8
1.2564e+003 1036.8
1.2588e+003 1046.8
1.2613e+003 1056.8
1.2637e+003 1066.8
1.2661e+003 1076.8
1.2686e+003 1086.8
1.2710e+003 1096.8
1.2734e+003 1106.8
1.2759e+003 1116.8
1.2783e+003 1126.8
1.2808e+003 1136.8
1.2833e+003 1146.8
1.2857e+003 1156.8
1.2882e+003 1166.8
1.2907e+003 1176.8
1.2931e+003 1186.8
1.2956e+003 1196.8
1.2981e+003 1206.8
1.3006e+003 1216.8
1.3031e+003 1226.8
1.3056e+003 1236.8
1.3081e+003 1246.8
1.3106e+003 1256.8
1.3132e+003 1266.8
1.3157e+003 1276.8
1.3182e+003 1286.8
1.3208e+003 1296.8
1.3233e+003 1306.8
1.3259e+003 1316.8
1.3285e+003 1326.8
1.3311e+003 1336.8
1.3336e+003 1346.8
1.3362e+003 1356.8
1.3388e+003 1366.8
1.3415e+003 1376.8
1.3441e+003 1386.8
1.3467e+003 1396.8
1.3493e+003 1406.8
1.3520e+003 1416.8
1.3547e+003 1426.8
1.3573e+003 1436.8
1.3600e+003 1446.8
1.3627e+003 1456.8
1.3654e+003 1466.8
1.3681e+003 1476.8
1.3708e+003 1486.8
1.3735e+003 1496.8
1.3763e+003 1506.8
1.3790e+003 1516.8
1.3818e+003 1526.8
1.3846e+003 1536.8
1.3874e+003 1546.8
1.3902e+003 1556.8
1.3930e+003 1566.8
1.3958e+003 1576.8
1.3987e+003 1586.8
1.4015e+003 1596.8
1.4044e+003 1606.8
1.4073e+003 1616.8
1.4101e+003 1626.8
1.4131e+003 1636.8
1.4160e+003 1646.8
1.4189e+003 1656.8
1.4219e+003 1666.8
1.4248e+003 1676.8
1.4278e+003 1686.8
1.4308e+003 1696.8
1.4338e+003 1706.8
1.4368e+003 1716.8
1.4398e+003 1726.8