-40%
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !
Rare devonian age pyrite concretion - nodule from dolomite quarry !

Rare devonian age pyrite concretion - nodule from dolomite quarry !

$ 6.33

Availability: 100 in stock
  • Condition: New
  • Restocking Fee: No
  • Item must be returned within: 30 Days
  • Return shipping will be paid by: Buyer
  • All returns accepted: Returns Accepted
  • Refund will be given as: Money back or replacement (buyer's choice)

    Description

    Specimen:
    Rare devonian age pyrite concretion - nodule from
    dolomite quarry.
    Locality:
    Poland,
    Holy Cross Mountains,
    Kowala
    Stratigraphy:
    Devonian - Famennian
    Age:
    ca. 370 - 360 Mya
    Matrix size :
    ca. 3,5 x 3,0 x 1,3 cm
    ( white square on pictures is 1,0 x 1,0 cm )
    Description:
    Rare devonian age pyrite concretion - nodule from
    dolomite quarry.
    An interesting, rarer way of occurrence of this mineral.
    Pyrite usually forms cuboid crystals, sometimes forming in close association to form raspberry-shaped masses called framboids. However, under certain circumstances, it can form anastamozing filaments or T-shaped crystals. Pyrite can also form almost perfect dodecahedral
    shapes known as pyritohedra and this suggests an explanation for the artificial geometrical models found in Europe as early as the 5th century BC.