xpl 2 mm

xpl 2 mm

ppl 2 mm

xpl 2 mm

xpl 2 mm

Sericite → Chl (?)

xpl 1 mm

ppl 1 mm

Some reaction between the upper Grt & the neighbouring Bt (?)

Chl between the two Grt grains

Retrogression of Tur

xpl 2 mm

ppl 8 mm

xpl 8 mm

ppl 8 mm

xpl 8 mm

ppl 2 mm

xpl 2 mm

xpl 2 mm

ppl 1 mm

xpl 1 mm

xpl 1 mm

Ky ?

(The grains have inclined extinction)

St

Accessory Czo in SW

Lamellar twins picked out by sericitisation

xpl 2 mm

xpl 2 mm

ppl 8 mm

xpl 8 mm

ppl 8 mm

xpl 8 mm

xpl 8 mm

ppl 2 mm

Undulose extinction

xpl 2 mm

ppl 8 mm

Simple twin

xpl 8 mm

Pleochroic halo in Bt

xpl 2 mm

xpl 2 mm

ppl 2 mm

xpl 2 mm

St

xpl 1 mm

ppl 8 mm

xpl 8 mm

xpl 8 mm

ppl 1 mm

xpl 1 mm

xpl 1 mm

ppl 8 mm

Layers of different grain sizes

ppl 8 mm

xpl 8 mm

ppl 2 mm

Intergrowths

ppl 1 mm

Pinched-out polysynthetic twins

ppl 2 mm

Symplectites (& a hole in the centre ?)

Bt → Chl below centre

Sericitisation

ppl 5 mm

xpl 5 mm

ppl 1 mm

Symplectite

ppl 2 mm

xpl 2 mm

ppl 5 mm

xpl 5 mm

xpl 2 mm

ppl 2 mm

xpl 2 mm

ppl 1 mm

(Video)

Three symplectites

Moderate-high relief

And (?)

Extinction position

Coarser grains at the edge

Extinct all as one

xpl 5 mm

Hexagonal accessory: Ap

ppl 2 mm

Essentially isotropic

ppl 5 mm

xpl 5 mm

St → Chl

xpl 5 mm

ppl 5 mm

xpl 5 mm

ppl 1 mm

Poikilitic Pl

ppl 5 mm

xpl 5 mm

ppl 2 mm

Kind of complicated extinction pattern

xpl 2 mm

ppl 5 mm

Ep N of centre

ppl 5 mm

xpl 5 mm

ppl 2 mm

Zrn?

ppl 1 mm

Zrn?

ppl 5 mm

xpl 5 mm

St to the SSE

Ms → Chl

ppl 2 mm

Ky in the centre (simple twin)

xpl 1 mm

ppl 5 mm

Kfs

ppl 5 mm

Kfs and fibrolite (Sil)

ppl 1 mm

Symplectite (inside a Kfs grain)

Grt, Bt, Qz, & Sil (fibrolite)

xpl 5 mm

ppl 5 mm

The rod-like, low-birefringence phase partially encases some grains

St grain to E

Geode-like pattern in centre (most likely a hole in the section)

Pale green rods. Yellow pleochroic halo SW of centre

Very low birefringence inclusions in Crd

xpl 2 mm

ppl 2 mm

xpl 2 mm

Ky(!!)

xpl 2 mm

Ms & Gr fingerprint pattern

Bright pink prismatic grain

Straight extinction

ppl 2 mm

(Length slow)

High relief, one good set of cleavage

xpl 2 mm

Straight extinction

ppl 5 mm

Lots of Ky

Grt to the east

Sericite

xpl 2 mm

Colourless high relief: Crn

Green high relief: Spl?

xpl 2 mm

No pleochroic halo

Pale yellow pleochroic halo in centre

High birefringence Ep in Crd

ppl 1 mm

Zoomed-out pleochroic halo in centre

ppl 5 mm

Ep in SE (bright pink birefringence)

Squares

xpl 1 mm

ppl 2 mm

Crd in centre (sector trilling)

xpl 2 mm

ppl 5 mm

xpl 5 mm

ppl 2 mm

xpl 2 mm

With sensitive tint

Central blue elongate And (length fast)

Crd NE of centre (sector trilling)

ppl 5 mm

xpl 5 mm