petrafjord:
Large single red pyrope garnet looks as though it had a bit of roughing about and shattering whilst in its formation stage..... 2024_0205_164316 copy
petrafjord:
Large amethyst geode..... 2024_0205_154219 copy
petrafjord:
Citrine quart opened geode..... 2024_0205_154004 copy
petrafjord:
Fossilized wood with calcite in fractures from Reiss Beach boulders..... Saw-sliced by Willie and hand-polished by Ernie..... 2024_0203_145014 copy
petrafjord:
Trilobite (a subphylum of ARTHROPODA) fossil - these creatures were amazing as they could see underwater as far as we humans can see above it..... 2024_0203_123704 copy
petrafjord:
Canyon Diablo meteorite fragment - oxidised surface cleaned by sellers..... 2024_0203_123123 copy
petrafjord:
Tektite - once blasted out molten rock cooled too glass on returning to earth from meteor impact..... 2024_0203_123031 copy
petrafjord:
Isastrea colonial fossil coral..... 2024_0203_122750 copy
petrafjord:
Scolecite a zeolite crystal spray (found in cavities in basaltic rock) - very fragile, sharp and, very brittle..... 2024_0203_122219 copy
petrafjord:
Epidote (Pistacite) an amphibole - mixed size crystalline mass - looking to right;-))..... 2024_0203_121829 copy
petrafjord:
Black Tourmaline (gemstone) a complex cyclosilicate crystalline mass found in granite pegmatites. I found smaller singular black crystals on Portsoy shore-beach..... 2024_0202_112612 copy
petrafjord:
Amber (succinite) - fossilized tree resin with trapped air bubbles from when it formed..... 2024_0202_115746 copy
petrafjord:
Nice piece of Lapis Lazuli (contains lazurite, calcite, pyroxenes and other silicates) from Afghanistan with its associated 'brassy-looking" iron pyrites - very much prized by the ancients..... 2024_0202_114342 copy
petrafjord:
Large lump of black Tourmaline gemstone crystals..... 2024_0202_112802 copy
petrafjord:
Pink mammilated amethyst from Mexico according to store owner - vugs filled with clear quartz crystals. .... 2024_0202_111853 copy
petrafjord:
130mys old Ammonite from Madagascar..... Central tube hole connected lift chambers filling/emptying them with buoyancy gas..... 2024_0201_114622 copy
petrafjord:
130mys old Ammonite from Madagascar showing spectacular annual growth structures of living-in and buoyancy chambers..... 2024_0201_114540 copy
petrafjord:
Moine metamorphic beautiful near symmetric folding in biotite psammite..... cafe pic 2023CE-0509
petrafjord:
Beautifully folded wavelike Moine metamorphosed biotite psammite - cafe pic. - 2023CE-0509...
petrafjord:
Serpentinite boulder from Reiss..... Ronnie's find..... 2022_1211_150802 copy
petrafjord:
Serpentinite boulder from Reiss..... The serpentine has developed from darker minerals deep down..... Ronnie's find..... 2022_1211_150201 copy
petrafjord:
Serpentinite boulder from Reiss..... A Ronnie find..... 2022_1211_145950 copy
petrafjord:
Skye serpentine brecciated marble formed very deep down and under tremendous pressure..... P.S. the 'thingie' that looks like a coelacanth at the right is not one:-) ..... 2022_1201_105035 copy
petrafjord:
Large brown flint handaxe and hammerstone - from Castletown beach..... 2022_1201_104545 copy
petrafjord:
Heavy large brown flint handaxe and hammerstone - Castletown Shore by harbour..... Note concave knapping..... 2022_1201_104330 copy
petrafjord:
Zincblende, cubic iron pyrites and quartz...... Note double-ended crystals..... 2022_1201_103853 copy
petrafjord:
Devonian sandstone fault with hydrothermal emplaced calcite fill in iron-rich sandstone..... 2022_1201_100340 copy
petrafjord:
Opened hydrothermal calcite filled vein in Middle Devonian iron-rich sandstone fault breccia..... It is very similar to that of the South Stack hydrothermal vein seen from it's seaward side..... 2022_1201_100251 copy
petrafjord:
Rugged lump of Azurite (blue) and malachite (green) from Morocco...... 2022_1104_100928 copy
petrafjord:
Stromatolite fossil algae. Morocco edge-on - grains are partially rounded desert sands cemented by two connected cone-shaped stromatolite bodies..... 2022_1027_124306 copy
