D.—l

Table 6.—Tests of Stone completed to 31st March, 1926.

By Authority : W. A. G. Skinner, Government Printer, Wellington.—l 926,

131

• ' m ~ ; - V Q *® Is Abrasion. |l , ||! — i i Locality. .g-jl go-J jsg .§ 5 Geological Classification. So * 3 ■SE i W g si ! S S £*3 fe # A O _. -< I ' II ]. Papakura, Hunua Gorge .. 175 0-05 3-20 12-20 19-30 30-0 Greywacke, line. 2. Te Miro, 10 m. south-east 171 0-04 2-82 14-20 19-30 27-0 Greywacke, moderate grain. from Cambridge 3. Belmont, Hutt Valley .. 170 0-03 3-74 10-70 19-20 21-0 Greywacke, weathered along some joints. 4. Pairere, Waikato River, near 177 0-08 3-10 12-90 19-20 21*0 Greywacke, rather shaly. Tirau 5. Motumaoho, Piako County, 170 0-08 2-82 14-28 19-20 33-6 Greywacke, rather fine. near Matamata 6. Tahuna, west side of Hauraki 170 0-31 3-42 11-71 18-07 29-0 Greywacke, many joints. Plains 7. Ngaruawahia Gorge .. 165 0-13 4-56 | 8-10 18-65 11-5 Fine-grained greywacke, much jointed. 8. Mount Eden Prisons quarry 187 1-04 3-44 11-60 19-00 25-0 Basalt, unweathered. 9. Pairere Bridge over Waikato, 182 0-30 j 4-26 9-40 16-90 9-0 Basalt, dyke. near Tirau .10. Te Kawa, north of Te Awa- 179 0-13 j 4-14 9-60 18*10 10-0 Basalt, coarsely crystalline. mutu 11. Mercer County quarry .. 182 0-12 j 3-95 10*01 19-05 36-0 Fine-grained basalt, much olivine. 12. Waikato River, near Tuakau 190 0-18 j 3-26 j 12-30 19-07 31-0 Fine-grained basalt, much olivine. * 13. Te Miro, 10 m. south-east 177 0-64 3-64 11-00 18-70 22*0 Andesite, slightly weathered. from Cambridge ! 14. Pairere Bridge over Waikato, 171 0*48 4*40 | 9-10 18-50 14-0 Boulder of hypersthene aunear Tirau gite andesite. 15. Waiorongomai, 10 m. south- 162 0-32 3*20 12-50 18-80 13-3 Hornblende andesite. west from Te Aroha 16. Bald Hill, near Kaiwaka, Kai- 157 1-61 3-30 12-10 18-70 23*0 Andesite, nearly pure feldpara spar. 17. Gordon's, 20 m. south-west 175 0*62 3*12 12-84 19-35 23-4 Hypersthene andesite. from Te Aroha 18. Aongatete, near Katikati, Bay 168 0-26 3-46 11-42 18-27 12-0 Hypersthene andesite. of Plenty 19. Te Puke, 15 m. east of Tau- 151 0-58 5-34 7-90 18-40 7-0 Rhyolite, many crystals of ranga feldspar. 20. Ngongotaha, Rotorua .. 113 6-72 25-10 1-70 16-38 4-0 Spherulitic rhyolite, vesicular. 21. Athenree, 5 m. south of Waihi 152 1-24 12-71 3-20 18-30 7-0 Rhyolite traversed by minute crevices. 22. Matamata (Sayer's pit) .. 126 10-62 19-32 2-10 .. .. Soft white rhyolite; did not stand up to drill. 23. Rotorua Borough quarry .. 139 3-74 10-62 3-76 16-50 7-0 Grey rhyolite, partly spherulitic. 24. Te Ngae, Lake Rotorua .. Ill 5-12 12-16 5-10 12-90 4-0 Silicified pumice sand. 25. Ruawai, Otamatea County, 183 0-49 .. .. 18-60 14-0 Diabase. Kaipara 26. Donovan's quarry, Tokatoka 166 0-62 5-46 7-32 17-83 13*0 Altered diabase. 27. Cemetery quarry, Tokatoka 170 0*62 .. .. 18*89 23-0 Altered basalt. 28. Mount William quarry, Weber 153 0-58 4-20 9-52 17-63 12-0 Calcareous sandstone. 29. Inglewood, No. 1 grade .. 174 0-94 3-70 10-81 18-94 15-0 Augite andesite. 30. Inglewood, No. 2 grade .. 156 3*18 14-60 2-70 16-87 6-0 Hornblende andesite. 31. Dreyer's rock, Mauriceville .. 154 0-81 22-40 1-80 15-87 5-0 Balanus limestone. 32. McGovern's pit, Mauriceville 147 1-43 25-86 1-58 14-40 3-5 Balanus limestone. 33. Horokiwi quarry, near Petone 164 0-05 3-80 10 53 19-11 19-0 Greywacke. 34. Wellington City quarry, Nga- 170 0-05 3-08 13-00 19-16 36-0 Greywacke. hauranga Gorge 35. Green Knoll, Tokatoka .. 176 0-31 5*85 6*20 17-95 11-0 Altered diabase. 36. Green Hill quarry, Tokatoka 167 0-43 3-86 10-37 18-68 27 0 Hornblende andesite. 37. Morris' quarry, Karangahake 164 0-62 4-86 8*20 18 86 12-5 Hypersthene andesite. 38. Rummer's pit, Mauriceville.. 165 0-50 5-13 7-78 .. .. Weathered greywacke. 39. Mount Bruce, Mauriceville .. 164 0-70 9*66 4-14 .. .. Weathered greywacke. 40. Rock Point, Mauriceville .. 164 0*50 7-64 5-23 18*00 7 0 Weathered greywacke. 41. Maungatuna quarry, Uawa.. 156 2-59 5-08 7-80 15-42 9-0 Glauconitic limestone. 42. Mokau River quarry .. 151 5-30 13-20 3-03 14*43 10-5 Glauconitic limestone. 43. Waipukurau, 9 m, from Dan- 164 0-62 9-18 4-34 .. .. Glauconitic limestone. nevirke 44. Inglewood . . .. 176 0-75 6-02 6-64 18-01 10-5 Coarse-grained basalt. 45. Te Wera quarry, Taranaki .. 166 0-52 11-56 3-46 16-81 10-0 Shell limestone. 46. Te Arai, Mangawai .. 158 3*02 10-16 3-93 13-74 4-2 Argillite. 47. Carswell's quarry, Castlepoint 161 0-62 11-90 3-36 18-14 6*8 Fine-grained greywacke. 48. Repongaere quarry, Gisborne 162 1-87 5-20 7-69 16-84 12-5 Shell limestone. 49. Campbelltown, Southland .. 180 0-08 1-86 21-51 19-23 62*2 Altered basalt. 50. Campbelltown, Southland .. 181 0*02 1*76 22*70 19-20 55-5 Altered basalt tuff. 51. Motuhora quarry, Gisborne 165 0*34 3-84 10-42 18-43 19-5 Greywacke. 52. Oakley Creek, Auckland .. 177 1 16 4-62 8-66 18-84 19-5 Basalt. 53. Waitakarei, Auckland .. 161 1-18 6-46 6-19 15-60 11*5 Altered basalt. •54. Waiongona River, Taranaki 168 0-66 4-78 8-37 17*95 14-5 Andesite. •