The Petrography Analysis
Toolbox (PetPAT)
Quantitative analytics forlight microscopy
ZEISS Axioscan 7 Geo
ZEISS Axioscan 7 Geo can create all the imaging modes required for optical mineralogy, and convert digital information
into powerful quantitative analytical information for modal abundances, orientation, grain size and more.

ZEISS Axioscan 7 Geo produces uniquedatasets for polarization microscopy
with multiple light modes captured in

ZEN Intellesis gives you the power of machine learning segmentation with ease of use. Label each mineral phaseof interest using an intuitive painting interface and allow the software to build a model of the mineralogy acrossyour entire sample.

multiple orientations. This enables
digital thin sections to be viewed within

Multiple image modes fora sample due to variable pleochroism

a virtual petrographic microscope orquantitative analysis

and birefringence/extinction.

interrogated for pixel or grain scale

The unique capabilities of ZEISS Axioscan 7

ZEISS Axioscan 7 Geo collects additional

information.

Geo begin with the ability to capture soimages in BF and CPL, which provide themuch digital information. High resolution

style of images seen in PPL and XPL

The optional Petrography Analysis Toolbox

images of full thin sections can be captured

respectively, but with no rotational(PetPAT) accesses the rich data thatin plane, cross, and circular polarized lightvariation and no minerals in extinction.

underpins Axioscan 7 Geo imagery.

(PPL, XPL & CPL), brightfield (BF) andThe BF-CPL images provide a powerful

By analyzing multiple orientations ofreflected light (RL), providing a huge

combination for machine learning segmen-

polarized light images, the PetPAT

range of flexibility for segmentation andtation using ZEN Intellesis. Intellesis allows

creates a variety of key sample outputs

quantitative analytics that goes far beyond

rapid segmentation of distinct phases

including the angle of extinction relative

simply visualizing digital datasets.

by “painting” minerals and building ato the analyzer and the position of grainmineralogy model for your samples.

boundaries. This information can be

Machine learning segmentation

combined with ZEN Intellesis phase

Optical mineralogy provides many

segmentation to produce grain size

challenges for classic image segmentation.

distribution and grain orientationMultiple orientations in polarized lightinformation for multiple distinct

modes means that the same mineral canphases in transmitted light.

appear with a very wide variation across200 µm
New powerful orientation analysis package turns entire thin sections into mineral orientation maps. These datasets can be used in conjunction with mineral segmentation
for detailed studies and used to generate grain size distribution data.

The Petrography Analysis Toolbox (PetPAT)

2. Grain boundary analysis

The optional PetPAT software package takes analytics a step

The orientation analysis allows for further analytics notfurther, taking full advantage of the unique stack of XPL images

possible with segmentation alone. Orientation analysis

in multiple orientations.

maps can be converted into grain boundary maps using
size distributions to be calculated across entire samples

Using XPL image stacks it is possible to calculate the angle

in transmitted light.

at which any given pixel would be at maximum or minimum
luminance, corresponding to the maximum birefringence orPowerful analytics package

extinction angle respectively. Using these data allow for theBy using a combination of ZEN Intellesis and PetPAT, individual

entire thin section to be mapped for orientation of mineralmineral species can be identified, segmented, and have orienta-grains in transmitted light – the light microscopy equivalenttion and grain size/boundary analysis performed. This provides aof large area EBSD analysis. Angular resolution can be

powerful workflow for building large projects entirely from thinsmaller than 1° with just a handful of images.

sections, allowing for “big data” projects and statistical relevanceof samples to be determined. With the ability to load up to
100 thin sections, batch processing, and automated analytics,Axioscan 7 Geo is the ultimate tool for quantitative petrography.

Carl Zeiss Microscopy GmbH07745 Jena, Germany
microscopy@zeiss.com
www.zeiss.com/axioscan-geo

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Not for therapeutic use, treatment or medical diagnostic evidence. Not all products are available in every country. Contact your local ZEISS representative for more information.
EN_42_012_356 | CZ 07-2024 | Design, scope of delivery and technical progress subject to change without notice. | © Carl Zeiss Microscopy GmbHan angular threshold for adjacent pixels. This allows grain
1. Orientation analysis